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		<title>Is Infinity Ordered? (Dr. Gerry Myerson)</title>
		<link>http://mathsdesire.wordpress.com/2007/11/27/is-infinity-ordered-dr-gerry-myerson/</link>
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		<pubDate>Tue, 27 Nov 2007 05:49:30 +0000</pubDate>
		<dc:creator>mathsdesire</dc:creator>
				<category><![CDATA[Number Theory]]></category>

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		<description><![CDATA[If you have two finite sets and want to know which one has more elements, then you can pair off elements in one with elements in the other and if there are elements left over in one set when you have exhausted the other, then the set with elements left over has more elements. For [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=mathsdesire.wordpress.com&amp;blog=2197706&amp;post=7&amp;subd=mathsdesire&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>If you have two finite sets and want to know which one has more elements, then you can pair off elements in one with elements in the other and if there are elements left over in one set when you have exhausted the other, then the set with elements left over has more elements.</p>
<p>For example, if</p>
<p align="center"> <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+A%3D%5Cleft%5C%7B%5Ctext%7BNorth%7D%2C%5C%2C%5Ctext%7BEast%7D%2C%5C%2C%5Ctext%7BSouth%7D%2C%5C%2C%5Ctext%7BWest%7D%5Cright%5C%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle A=&#92;left&#92;{&#92;text{North},&#92;,&#92;text{East},&#92;,&#92;text{South},&#92;,&#92;text{West}&#92;right&#92;}' title='&#92;displaystyle A=&#92;left&#92;{&#92;text{North},&#92;,&#92;text{East},&#92;,&#92;text{South},&#92;,&#92;text{West}&#92;right&#92;}' class='latex' /></p>
<p> and</p>
<p align="center"> <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+B%3D%5Cleft%5C%7B%5Ctext%7BSunday%7D%2C%5C%2C%5Ctext%7BMonday%7D%2C%5C%2C%5Ctext%7BTuesday%7D%2C%5C%2C%5Ctext%7BWednesday%7D%2C%5C%2C%5Ctext%7BThursday%7D%2C%5C%2C%5Ctext%7BFriday%7D%2C%5C%2C%5Ctext%7BSaturday%7D%5Cright%5C%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle B=&#92;left&#92;{&#92;text{Sunday},&#92;,&#92;text{Monday},&#92;,&#92;text{Tuesday},&#92;,&#92;text{Wednesday},&#92;,&#92;text{Thursday},&#92;,&#92;text{Friday},&#92;,&#92;text{Saturday}&#92;right&#92;}' title='&#92;displaystyle B=&#92;left&#92;{&#92;text{Sunday},&#92;,&#92;text{Monday},&#92;,&#92;text{Tuesday},&#92;,&#92;text{Wednesday},&#92;,&#92;text{Thursday},&#92;,&#92;text{Friday},&#92;,&#92;text{Saturday}&#92;right&#92;}' class='latex' /></p>
<p> and you pair off <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Ctext%7BNorth%7D%5CLeftrightarrow%5Ctext%7BSunday%7D%2C%5C%2C%5Ctext%7BEast%7D%5CLeftrightarrow%5Ctext%7BMonday%7D%2C%5C%2C%5Ctext%7BSouth%7D%5CLeftrightarrow%5Ctext%7BTuesday%7D%2C%5C%2C%5Ctext%7BWest%7D%5CLeftrightarrow%5Ctext%7BWednesday%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;text{North}&#92;Leftrightarrow&#92;text{Sunday},&#92;,&#92;text{East}&#92;Leftrightarrow&#92;text{Monday},&#92;,&#92;text{South}&#92;Leftrightarrow&#92;text{Tuesday},&#92;,&#92;text{West}&#92;Leftrightarrow&#92;text{Wednesday}' title='&#92;displaystyle&#92;text{North}&#92;Leftrightarrow&#92;text{Sunday},&#92;,&#92;text{East}&#92;Leftrightarrow&#92;text{Monday},&#92;,&#92;text{South}&#92;Leftrightarrow&#92;text{Tuesday},&#92;,&#92;text{West}&#92;Leftrightarrow&#92;text{Wednesday}' class='latex' />, then you have exhausted <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+A&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle A' title='&#92;displaystyle A' class='latex' /> and still have things left over in <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+B&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle B' title='&#92;displaystyle B' class='latex' />, so <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+B&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle B' title='&#92;displaystyle B' class='latex' /> has more elements.</p>
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		<title>Is Infinity Ordered? (Dr. Rod Yager)</title>
		<link>http://mathsdesire.wordpress.com/2007/11/27/is-infinity-ordered-dr-rod-yager/</link>
		<comments>http://mathsdesire.wordpress.com/2007/11/27/is-infinity-ordered-dr-rod-yager/#comments</comments>
		<pubDate>Tue, 27 Nov 2007 05:15:40 +0000</pubDate>
		<dc:creator>mathsdesire</dc:creator>
				<category><![CDATA[Number Theory]]></category>

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		<title>The Solutions To The Cubic Polynomials</title>
		<link>http://mathsdesire.wordpress.com/2007/11/25/the-solutions-to-the-cubic-polynomials/</link>
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		<pubDate>Sun, 25 Nov 2007 13:17:24 +0000</pubDate>
		<dc:creator>mathsdesire</dc:creator>
				<category><![CDATA[Polynomial Solutions]]></category>

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		<description><![CDATA[A general Cubic Equation is in the form           By dividing everything in equation by , we obtain           If we let and , then by replacing these values into equation , we can conclude that a general Cubic Equation is in the form           In order to solve equation , we need to eliminate [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=mathsdesire.wordpress.com&amp;blog=2197706&amp;post=5&amp;subd=mathsdesire&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p align="left">A general <strong><em>Cubic Equation</em></strong> is in the form</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+Az%5E%7B3%7D%2BBz%5E%7B2%7D%2BCz%2BD%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle Az^{3}+Bz^{2}+Cz+D=0' title='&#92;displaystyle Az^{3}+Bz^{2}+Cz+D=0' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%281%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(1&#92;right)' title='&#92;displaystyle &#92;left(1&#92;right)' class='latex' /></p>
<p align="left">By dividing everything in equation <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%281%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(1&#92;right)' title='&#92;displaystyle &#92;left(1&#92;right)' class='latex' /> by <img src='http://s0.wp.com/latex.php?latex=A&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='A' title='A' class='latex' />, we obtain</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+z%5E%7B3%7D%2B%5Cfrac%7BB%7D%7BA%7Dz%5E%7B2%7D%2B%5Cfrac%7BC%7D%7BA%7Dz%2B%5Cfrac%7BD%7D%7BA%7D%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle z^{3}+&#92;frac{B}{A}z^{2}+&#92;frac{C}{A}z+&#92;frac{D}{A}=0' title='&#92;displaystyle z^{3}+&#92;frac{B}{A}z^{2}+&#92;frac{C}{A}z+&#92;frac{D}{A}=0' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%282%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(2&#92;right)' title='&#92;displaystyle &#92;left(2&#92;right)' class='latex' /></p>
<p align="left">If we let <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+a_%7B2%7D%3D%5Cfrac%7BB%7D%7BA%7D%2C%5C%2Ca_%7B1%7D%3D%5Cfrac%7BC%7D%7BA%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle a_{2}=&#92;frac{B}{A},&#92;,a_{1}=&#92;frac{C}{A}' title='&#92;displaystyle a_{2}=&#92;frac{B}{A},&#92;,a_{1}=&#92;frac{C}{A}' class='latex' /> and <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+a_%7B0%7D%3D%5Cfrac%7BD%7D%7BA%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle a_{0}=&#92;frac{D}{A}' title='&#92;displaystyle a_{0}=&#92;frac{D}{A}' class='latex' />, then by replacing these values into equation <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%282%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(2&#92;right)' title='&#92;displaystyle &#92;left(2&#92;right)' class='latex' />, we can conclude that a general <strong><em>Cubic Equation </em></strong>is in the form</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+z%5E%7B3%7D%2Ba_%7B2%7Dz%5E%7B2%7D%2Ba_%7B1%7Dz%2Ba_%7B0%7D%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle z^{3}+a_{2}z^{2}+a_{1}z+a_{0}=0' title='&#92;displaystyle z^{3}+a_{2}z^{2}+a_{1}z+a_{0}=0' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%283%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(3&#92;right)' title='&#92;displaystyle&#92;left(3&#92;right)' class='latex' /></p>
<p align="left">In order to solve equation <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%283%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(3&#92;right)' title='&#92;displaystyle &#92;left(3&#92;right)' class='latex' />, we need to eliminate <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+a_%7B2%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle a_{2}' title='&#92;displaystyle a_{2}' class='latex' /> by replacing</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+z%3Dx-%5Clambda&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle z=x-&#92;lambda' title='&#92;displaystyle z=x-&#92;lambda' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%284%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(4&#92;right)' title='&#92;displaystyle&#92;left(4&#92;right)' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%28x-%5Clambda%5Cright%29%5E%7B3%7D%2Ba_%7B2%7D%5Cleft%28x-%5Clambda%5Cright%29%5E%7B2%7D%2Ba_%7B1%7D%5Cleft%28x-%5Clambda%5Cright%29%2Ba_%7B0%7D%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(x-&#92;lambda&#92;right)^{3}+a_{2}&#92;left(x-&#92;lambda&#92;right)^{2}+a_{1}&#92;left(x-&#92;lambda&#92;right)+a_{0}=0' title='&#92;displaystyle &#92;left(x-&#92;lambda&#92;right)^{3}+a_{2}&#92;left(x-&#92;lambda&#92;right)^{2}+a_{1}&#92;left(x-&#92;lambda&#92;right)+a_{0}=0' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%285%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(5&#92;right)' title='&#92;displaystyle &#92;left(5&#92;right)' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%28x%5E%7B3%7D-3x%5E%7B2%7D%5Clambda%2B3x%5Clambda%5E%7B2%7D-%5Clambda%5E%7B3%7D%5Cright%29%2Ba_%7B2%7D%5Cleft%28x%5E%7B2%7D-2%5Clambda+x%2B%5Clambda%5E%7B2%7D%5Cright%29%2Ba_%7B1%7D%5Cleft%28x-%5Clambda%5Cright%29%2Ba_%7B0%7D%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(x^{3}-3x^{2}&#92;lambda+3x&#92;lambda^{2}-&#92;lambda^{3}&#92;right)+a_{2}&#92;left(x^{2}-2&#92;lambda x+&#92;lambda^{2}&#92;right)+a_{1}&#92;left(x-&#92;lambda&#92;right)+a_{0}=0' title='&#92;displaystyle &#92;left(x^{3}-3x^{2}&#92;lambda+3x&#92;lambda^{2}-&#92;lambda^{3}&#92;right)+a_{2}&#92;left(x^{2}-2&#92;lambda x+&#92;lambda^{2}&#92;right)+a_{1}&#92;left(x-&#92;lambda&#92;right)+a_{0}=0' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%286%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(6&#92;right)' title='&#92;displaystyle &#92;left(6&#92;right)' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+x%5E%7B3%7D%2B%5Cleft%28-3%5Clambda%2Ba_%7B2%7D%5Cright%29x%5E%7B2%7D%2B%5Cleft%283%5Clambda%5E%7B2%7D-2a_%7B2%7D%5Clambda%2Ba_%7B1%7D%5Cright%29x%2B%5Cleft%28-%5Clambda%5E%7B3%7D%2Ba_%7B2%7D%5Clambda%5E%7B2%7D-a_%7B1%7D%5Clambda%2Ba_%7B0%7D%5Cright%29%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle x^{3}+&#92;left(-3&#92;lambda+a_{2}&#92;right)x^{2}+&#92;left(3&#92;lambda^{2}-2a_{2}&#92;lambda+a_{1}&#92;right)x+&#92;left(-&#92;lambda^{3}+a_{2}&#92;lambda^{2}-a_{1}&#92;lambda+a_{0}&#92;right)=0' title='&#92;displaystyle x^{3}+&#92;left(-3&#92;lambda+a_{2}&#92;right)x^{2}+&#92;left(3&#92;lambda^{2}-2a_{2}&#92;lambda+a_{1}&#92;right)x+&#92;left(-&#92;lambda^{3}+a_{2}&#92;lambda^{2}-a_{1}&#92;lambda+a_{0}&#92;right)=0' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%287%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(7&#92;right)' title='&#92;displaystyle &#92;left(7&#92;right)' class='latex' /></p>
<p align="left">Then <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+x%5E%7B2%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle x^{2}' title='&#92;displaystyle x^{2}' class='latex' /> is eliminated by letting <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Clambda%3D%5Cfrac%7B1%7D%7B3%7Da_%7B2%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;lambda=&#92;frac{1}{3}a_{2}' title='&#92;displaystyle &#92;lambda=&#92;frac{1}{3}a_{2}' class='latex' />, so</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+z%3Dx-%5Cfrac%7B1%7D%7B3%7Da_%7B2%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle z=x-&#92;frac{1}{3}a_{2}' title='&#92;displaystyle z=x-&#92;frac{1}{3}a_{2}' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%288%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(8&#92;right)' title='&#92;displaystyle&#92;left(8&#92;right)' class='latex' /></p>
<p align="left">Then</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+z%5E%7B3%7D%3D%5Cleft%28x-%5Cfrac%7B1%7D%7B3%7Da_%7B2%7D%5Cright%29%5E%7B3%7D%3Dx%5E%7B3%7D-a_%7B2%7Dx%5E%7B2%7D%2B%5Cfrac%7B1%7D%7B3%7Da_%7B2%7D%5E%7B2%7Dx-%5Cfrac%7B1%7D%7B27%7Da_%7B2%7D%5E%7B3%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle z^{3}=&#92;left(x-&#92;frac{1}{3}a_{2}&#92;right)^{3}=x^{3}-a_{2}x^{2}+&#92;frac{1}{3}a_{2}^{2}x-&#92;frac{1}{27}a_{2}^{3}' title='&#92;displaystyle z^{3}=&#92;left(x-&#92;frac{1}{3}a_{2}&#92;right)^{3}=x^{3}-a_{2}x^{2}+&#92;frac{1}{3}a_{2}^{2}x-&#92;frac{1}{27}a_{2}^{3}' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%289%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(9&#92;right)' title='&#92;displaystyle &#92;left(9&#92;right)' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+a_%7B2%7Dz%5E%7B2%7D%3Da_%7B2%7D%5Cleft%28x-%5Cfrac%7B1%7D%7B3%7Da_%7B2%7D%5Cright%29%5E%7B2%7D%3Da_%7B2%7D%5Cleft%28x%5E%7B2%7D-%5Cfrac%7B2%7D%7B3%7Da_%7B2%7Dx%2B%5Cfrac%7B1%7D%7B9%7Da_%7B2%7D%5E%7B2%7D%5Cright%29%3Da_%7B2%7Dx%5E%7B2%7D-%5Cfrac%7B2%7D%7B3%7Da_%7B2%7D%5E%7B2%7Dx%2B%5Cfrac%7B1%7D%7B9%7Da_%7B2%7D%5E%7B3%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle a_{2}z^{2}=a_{2}&#92;left(x-&#92;frac{1}{3}a_{2}&#92;right)^{2}=a_{2}&#92;left(x^{2}-&#92;frac{2}{3}a_{2}x+&#92;frac{1}{9}a_{2}^{2}&#92;right)=a_{2}x^{2}-&#92;frac{2}{3}a_{2}^{2}x+&#92;frac{1}{9}a_{2}^{3}' title='&#92;displaystyle a_{2}z^{2}=a_{2}&#92;left(x-&#92;frac{1}{3}a_{2}&#92;right)^{2}=a_{2}&#92;left(x^{2}-&#92;frac{2}{3}a_{2}x+&#92;frac{1}{9}a_{2}^{2}&#92;right)=a_{2}x^{2}-&#92;frac{2}{3}a_{2}^{2}x+&#92;frac{1}{9}a_{2}^{3}' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%2810%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(10&#92;right)' title='&#92;displaystyle&#92;left(10&#92;right)' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+a_%7B1%7Dz%3Da_%7B1%7D%5Cleft%28x-%5Cfrac%7B1%7D%7B3%7Da_%7B2%7D%5Cright%29%3Da_%7B1%7Dx-%5Cfrac%7B1%7D%7B3%7Da_%7B1%7Da_%7B2%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle a_{1}z=a_{1}&#92;left(x-&#92;frac{1}{3}a_{2}&#92;right)=a_{1}x-&#92;frac{1}{3}a_{1}a_{2}' title='&#92;displaystyle a_{1}z=a_{1}&#92;left(x-&#92;frac{1}{3}a_{2}&#92;right)=a_{1}x-&#92;frac{1}{3}a_{1}a_{2}' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%2811%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(11&#92;right)' title='&#92;displaystyle &#92;left(11&#92;right)' class='latex' /></p>
<p align="left">So equation <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%283%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(3&#92;right)' title='&#92;displaystyle &#92;left(3&#92;right)' class='latex' /> becomes</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+x%5E%7B3%7D%2B%5Cleft%28-a_%7B2%7D%2Ba_%7B2%7D%5Cright%29x%5E%7B2%7D%2B%5Cleft%28%5Cfrac%7B1%7D%7B3%7Da_%7B2%7D%5E%7B2%7D-%5Cfrac%7B2%7D%7B3%7Da_%7B2%7D%5E%7B2%7D%2Ba_%7B1%7D%5Cright%29x%2B%5Cleft%28-%5Cfrac%7B1%7D%7B27%7Da_%7B2%7D%5E%7B3%7D%2B%5Cfrac%7B1%7D%7B9%7Da_%7B2%7D%5E%7B3%7D-%5Cfrac%7B1%7D%7B3%7Da_%7B1%7Da_%7B2%7D%2Ba_%7B0%7D%5Cright%29%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle x^{3}+&#92;left(-a_{2}+a_{2}&#92;right)x^{2}+&#92;left(&#92;frac{1}{3}a_{2}^{2}-&#92;frac{2}{3}a_{2}^{2}+a_{1}&#92;right)x+&#92;left(-&#92;frac{1}{27}a_{2}^{3}+&#92;frac{1}{9}a_{2}^{3}-&#92;frac{1}{3}a_{1}a_{2}+a_{0}&#92;right)=0' title='&#92;displaystyle x^{3}+&#92;left(-a_{2}+a_{2}&#92;right)x^{2}+&#92;left(&#92;frac{1}{3}a_{2}^{2}-&#92;frac{2}{3}a_{2}^{2}+a_{1}&#92;right)x+&#92;left(-&#92;frac{1}{27}a_{2}^{3}+&#92;frac{1}{9}a_{2}^{3}-&#92;frac{1}{3}a_{1}a_{2}+a_{0}&#92;right)=0' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%2812%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(12&#92;right)' title='&#92;displaystyle &#92;left(12&#92;right)' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+x%5E%7B3%7D%2B%5Cleft%28-%5Cfrac%7B1%7D%7B3%7Da_%7B2%7D%5E%7B2%7D%2Ba_%7B1%7D%5Cright%29x%2B%5Cleft%28%5Cfrac%7B2%7D%7B27%7Da_%7B2%7D%5E%7B3%7D-%5Cfrac%7B1%7D%7B3%7Da_%7B1%7Da_%7B2%7D%2Ba_%7B0%7D%5Cright%29%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle x^{3}+&#92;left(-&#92;frac{1}{3}a_{2}^{2}+a_{1}&#92;right)x+&#92;left(&#92;frac{2}{27}a_{2}^{3}-&#92;frac{1}{3}a_{1}a_{2}+a_{0}&#92;right)=0' title='&#92;displaystyle x^{3}+&#92;left(-&#92;frac{1}{3}a_{2}^{2}+a_{1}&#92;right)x+&#92;left(&#92;frac{2}{27}a_{2}^{3}-&#92;frac{1}{3}a_{1}a_{2}+a_{0}&#92;right)=0' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%2813%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(13&#92;right)' title='&#92;displaystyle &#92;left(13&#92;right)' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+x%5E%7B3%7D%2B%5Cleft%28%5Cfrac%7B-a_%7B2%7D%5E%7B2%7D%2B3a_%7B1%7D%7D%7B3%7D%5Cright%29x-%5Cleft%28%5Cfrac%7B-2a_%7B2%7D%5E%7B3%7D%2B9a_%7B1%7Da_%7B2%7D-27a_%7B0%7D%7D%7B27%7D%5Cright%29%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle x^{3}+&#92;left(&#92;frac{-a_{2}^{2}+3a_{1}}{3}&#92;right)x-&#92;left(&#92;frac{-2a_{2}^{3}+9a_{1}a_{2}-27a_{0}}{27}&#92;right)=0' title='&#92;displaystyle x^{3}+&#92;left(&#92;frac{-a_{2}^{2}+3a_{1}}{3}&#92;right)x-&#92;left(&#92;frac{-2a_{2}^{3}+9a_{1}a_{2}-27a_{0}}{27}&#92;right)=0' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%2814%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(14&#92;right)' title='&#92;displaystyle &#92;left(14&#92;right)' class='latex' /></p>
<p align="left">Defining</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+p%3D%5Cfrac%7B-a_%7B2%7D%5E%7B2%7D%2B3a_%7B1%7D%7D%7B3%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle p=&#92;frac{-a_{2}^{2}+3a_{1}}{3}' title='&#92;displaystyle p=&#92;frac{-a_{2}^{2}+3a_{1}}{3}' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%2815%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(15&#92;right)' title='&#92;displaystyle&#92;left(15&#92;right)' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+q%3D%5Cfrac%7B-2a_%7B2%7D%5E%7B3%7D%2B9a_%7B1%7Da_%7B2%7D-27a_%7B0%7D%7D%7B27%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle q=&#92;frac{-2a_{2}^{3}+9a_{1}a_{2}-27a_{0}}{27}' title='&#92;displaystyle q=&#92;frac{-2a_{2}^{3}+9a_{1}a_{2}-27a_{0}}{27}' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%2816%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(16&#92;right)' title='&#92;displaystyle &#92;left(16&#92;right)' class='latex' /></p>
<p align="left">Then allows equation <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%2814%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(14&#92;right)' title='&#92;displaystyle&#92;left(14&#92;right)' class='latex' /> to be</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+x%5E%7B3%7D%2Bpx%3Dq&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle x^{3}+px=q' title='&#92;displaystyle x^{3}+px=q' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%2817%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(17&#92;right)' title='&#92;displaystyle &#92;left(17&#92;right)' class='latex' /></p>
<p align="left">Now replace <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+x%3Dw-%5Cfrac%7Bp%7D%7B3w%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle x=w-&#92;frac{p}{3w}' title='&#92;displaystyle x=w-&#92;frac{p}{3w}' class='latex' /> (<strong><em>Vieta&#8217;s Substitution</em></strong>) in equation <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%2817%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(17&#92;right)' title='&#92;displaystyle&#92;left(17&#92;right)' class='latex' /> to get</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%28w-%5Cfrac%7Bp%7D%7B3w%7D%5Cright%29%5E%7B3%7D%2Bp%5Cleft%28w-%5Cfrac%7Bp%7D%7B3w%7D%5Cright%29-q%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(w-&#92;frac{p}{3w}&#92;right)^{3}+p&#92;left(w-&#92;frac{p}{3w}&#92;right)-q=0' title='&#92;displaystyle &#92;left(w-&#92;frac{p}{3w}&#92;right)^{3}+p&#92;left(w-&#92;frac{p}{3w}&#92;right)-q=0' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+w%5E%7B3%7D-%5Cfrac%7B3w%5E%7B2%7Dp%7D%7B3w%7D%2B%5Cfrac%7B3wp%5E%7B2%7D%7D%7B9w%5E%7B2%7D%7D-%5Cfrac%7Bp%5E%7B3%7D%7D%7B27w%5E%7B3%7D%7D%2Bpw-%5Cfrac%7Bp%5E%7B2%7D%7D%7B3w%7D-q%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle w^{3}-&#92;frac{3w^{2}p}{3w}+&#92;frac{3wp^{2}}{9w^{2}}-&#92;frac{p^{3}}{27w^{3}}+pw-&#92;frac{p^{2}}{3w}-q=0' title='&#92;displaystyle w^{3}-&#92;frac{3w^{2}p}{3w}+&#92;frac{3wp^{2}}{9w^{2}}-&#92;frac{p^{3}}{27w^{3}}+pw-&#92;frac{p^{2}}{3w}-q=0' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+w%5E%7B3%7D-wp%2B%5Cfrac%7Bp%5E%7B2%7D%7D%7B3w%7D-%5Cfrac%7Bp%5E%7B3%7D%7D%7B27w%5E%7B3%7D%7D%2Bpw-%5Cfrac%7Bp%5E%7B2%7D%7D%7B3w%7D-q%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle w^{3}-wp+&#92;frac{p^{2}}{3w}-&#92;frac{p^{3}}{27w^{3}}+pw-&#92;frac{p^{2}}{3w}-q=0' title='&#92;displaystyle w^{3}-wp+&#92;frac{p^{2}}{3w}-&#92;frac{p^{3}}{27w^{3}}+pw-&#92;frac{p^{2}}{3w}-q=0' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+w%5E%7B3%7D-%5Cfrac%7Bp%5E%7B3%7D%7D%7B27w%5E%7B3%7D%7D-q%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle w^{3}-&#92;frac{p^{3}}{27w^{3}}-q=0' title='&#92;displaystyle w^{3}-&#92;frac{p^{3}}{27w^{3}}-q=0' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%2818%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(18&#92;right)' title='&#92;displaystyle &#92;left(18&#92;right)' class='latex' /></p>
<p align="left">By multiplying equation <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%2818%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(18&#92;right)' title='&#92;displaystyle&#92;left(18&#92;right)' class='latex' /> by <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+w%5E%7B3%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle w^{3}' title='&#92;displaystyle w^{3}' class='latex' />, we get</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+w%5E%7B6%7D-qw%5E%7B3%7D-%5Cfrac%7Bp%5E%7B3%7D%7D%7B27%7D%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle w^{6}-qw^{3}-&#92;frac{p^{3}}{27}=0' title='&#92;displaystyle w^{6}-qw^{3}-&#92;frac{p^{3}}{27}=0' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%28w%5E%7B3%7D%5Cright%29%5E%7B2%7D-qw%5E%7B3%7D-%5Cfrac%7Bp%5E%7B3%7D%7D%7B27%7D%3D0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(w^{3}&#92;right)^{2}-qw^{3}-&#92;frac{p^{3}}{27}=0' title='&#92;displaystyle &#92;left(w^{3}&#92;right)^{2}-qw^{3}-&#92;frac{p^{3}}{27}=0' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%2819%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(19&#92;right)' title='&#92;displaystyle&#92;left(19&#92;right)' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+w%5E%7B3%7D%3D%5Cfrac%7Bq%5Cpm%5Csqrt%7Bq%5E%7B2%7D%2B%5Cfrac%7B4p%5E%7B3%7D%7D%7B27%7D%7D%7D%7B2%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle w^{3}=&#92;frac{q&#92;pm&#92;sqrt{q^{2}+&#92;frac{4p^{3}}{27}}}{2}' title='&#92;displaystyle w^{3}=&#92;frac{q&#92;pm&#92;sqrt{q^{2}+&#92;frac{4p^{3}}{27}}}{2}' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+w%5E%7B3%7D%3D%5Cfrac%7Bq%5Cpm2%5Csqrt%7B%5Cfrac%7B1%7D%7B4%7Dq%5E%7B2%7D%2B%5Cfrac%7B1%7D%7B27%7Dp%5E%7B3%7D%7D%7D%7B2%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle w^{3}=&#92;frac{q&#92;pm2&#92;sqrt{&#92;frac{1}{4}q^{2}+&#92;frac{1}{27}p^{3}}}{2}' title='&#92;displaystyle w^{3}=&#92;frac{q&#92;pm2&#92;sqrt{&#92;frac{1}{4}q^{2}+&#92;frac{1}{27}p^{3}}}{2}' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+w%5E%7B3%7D%3D%5Cfrac%7B1%7D%7B2%7Dq%5Cpm%5Csqrt%7B%5Cfrac%7B1%7D%7B4%7Dq%5E%7B2%7D%2B%5Cfrac%7B1%7D%7B27%7Dp%5E%7B3%7D%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle w^{3}=&#92;frac{1}{2}q&#92;pm&#92;sqrt{&#92;frac{1}{4}q^{2}+&#92;frac{1}{27}p^{3}}' title='&#92;displaystyle w^{3}=&#92;frac{1}{2}q&#92;pm&#92;sqrt{&#92;frac{1}{4}q^{2}+&#92;frac{1}{27}p^{3}}' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+%5Cleft%2820%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle &#92;left(20&#92;right)' title='&#92;displaystyle &#92;left(20&#92;right)' class='latex' /></p>
<p align="left">Now let</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+R%3D%5Cfrac%7B1%7D%7B2%7Dq&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle R=&#92;frac{1}{2}q' title='&#92;displaystyle R=&#92;frac{1}{2}q' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%2821%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(21&#92;right)' title='&#92;displaystyle&#92;left(21&#92;right)' class='latex' /></p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+Q%3D%5Cfrac%7B1%7D%7B3%7Dp&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle Q=&#92;frac{1}{3}p' title='&#92;displaystyle Q=&#92;frac{1}{3}p' class='latex' />          <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%2822%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(22&#92;right)' title='&#92;displaystyle&#92;left(22&#92;right)' class='latex' /></p>
<p align="left">So equation <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%2820%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(20&#92;right)' title='&#92;displaystyle&#92;left(20&#92;right)' class='latex' /> becomes</p>
<p align="center"><img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle+w%5E%7B3%7D%3DR%5Cpm%5Csqrt%7BR%5E%7B2%7D%2BQ%5E%7B3%7D%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle w^{3}=R&#92;pm&#92;sqrt{R^{2}+Q^{3}}' title='&#92;displaystyle w^{3}=R&#92;pm&#92;sqrt{R^{2}+Q^{3}}' class='latex' />         <img src='http://s0.wp.com/latex.php?latex=%5Cdisplaystyle%5Cleft%2823%5Cright%29&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;displaystyle&#92;left(23&#92;right)' title='&#92;displaystyle&#92;left(23&#92;right)' class='latex' /></p>
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		<title>Complex Numbers Are Not Ordered</title>
		<link>http://mathsdesire.wordpress.com/2007/11/25/complex-numbers-are-not-ordered/</link>
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		<pubDate>Sun, 25 Nov 2007 12:09:36 +0000</pubDate>
		<dc:creator>mathsdesire</dc:creator>
				<category><![CDATA[NUMBERS]]></category>

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		<description><![CDATA[Complex Numbers do not possess magnitude in the sense of Real Numbers; i.e. the Complex Numbers are not ordered. (It is not possible to compare two Complex Numbers by saying one is greater than or less than the other, e.g. we can not say that is greater or less than .) Proof. To prove that [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=mathsdesire.wordpress.com&amp;blog=2197706&amp;post=4&amp;subd=mathsdesire&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><strong><em>Complex Numbers</em></strong> do not possess magnitude in the sense of <strong><em>Real Numbers</em></strong>; i.e. the <strong><em>Complex Numbers</em></strong> are not ordered. (It is not possible to compare two <strong><em>Complex Numbers</em></strong> by saying one is greater than or less than the other, e.g. we can not say that <img src='http://s0.wp.com/latex.php?latex=5%2B3i&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='5+3i' title='5+3i' class='latex' /> is greater or less than <img src='http://s0.wp.com/latex.php?latex=2%2Bi&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='2+i' title='2+i' class='latex' />.)</p>
<p><em><strong>Proof.</strong> </em>To prove that the set <img src='http://s0.wp.com/latex.php?latex=%5Cmathbb%7BC%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;mathbb{C}' title='&#92;mathbb{C}' class='latex' /> of <strong><em>Complex Numbers</em></strong> is not ordered, let us assume <img src='http://s0.wp.com/latex.php?latex=%5Cmathbb%7BC%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;mathbb{C}' title='&#92;mathbb{C}' class='latex' /> is ordered. We assume that all suares of non-zero elements in an ordered domain are positive. Hence this implies <img src='http://s0.wp.com/latex.php?latex=i%5E%7B2%7D%3E0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='i^{2}&gt;0' title='i^{2}&gt;0' class='latex' />, which contradicts the definition <img src='http://s0.wp.com/latex.php?latex=i%5E%7B2%7D%3D-1%3C0&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='i^{2}=-1&lt;0' title='i^{2}=-1&lt;0' class='latex' />. Hence <img src='http://s0.wp.com/latex.php?latex=%5Cmathbb%7BC%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;mathbb{C}' title='&#92;mathbb{C}' class='latex' /> can not be ordered.</p>
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