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How did you discover these parametric solutions to diophantine equations?
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fanzhuyifan, Dec 31, 2016, 9:25 AM
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Russian? are you sure it ain't greek?
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Mathisfun04, Dec 27, 2016, 4:03 PM
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yep i agree
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Eugenis, Oct 31, 2015, 2:40 AM
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Best blog ever
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FlakeLCR, Oct 13, 2015, 8:07 PM
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too much russian.
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rileywkong, Aug 21, 2015, 6:10 PM
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Decided the equation.
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individ, Aug 20, 2015, 5:05 AM
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Some insight into how you figured it out?
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Not_a_Username, Aug 19, 2015, 3:52 PM
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I figured it out. Decided equation.
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individ, Aug 19, 2015, 5:01 AM
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Yes, how do you come up with the formula?
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Not_a_Username, Aug 18, 2015, 10:29 PM
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I don't understand. There are the equation and there is a formula to it solutions. What is the problem?
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individ, Aug 13, 2015, 4:22 PM
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What? Lol you are substituting solutions with literally no motivation
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Not_a_Username, Aug 13, 2015, 12:59 PM
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What replacement? Where?
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individ, Aug 8, 2015, 5:37 AM
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Darn, what are the motivation for these substitutions???
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Not_a_Username, Aug 5, 2015, 10:44 AM
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Are you greek?
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beanielove2, Dec 24, 2014, 6:31 PM
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So, a purely mathematical blog?
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Lionfish, Dec 2, 2014, 1:20 PM
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To prove that it is necessary to show the method of calculation. I do not want to do yet.
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individ, Mar 28, 2014, 6:14 AM
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I can't understand these posts....What language are they written in? I don't recognize it.
I like your avatar!
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15cjames, Mar 11, 2014, 1:57 PM
by individ, Nov 16, 2014, 11:11 AM ![\[(\frac{a(a+1)}{2})^2+(\frac{b(b+1)}{2})^2=c^2\]](//latex.artofproblemsolving.com/2/e/b/2ebe2a3721e17ff9679785373af9d256e9ed353a.png)
![\[a=\mp(p+2xys)p\]](//latex.artofproblemsolving.com/8/e/6/8e6366d8f0b5d951eee03f71d461474ebf994d38.png)
![\[k=\mp(p+2xys)\frac{s}{2}\]](//latex.artofproblemsolving.com/9/9/2/9926d595830ae255059729cd89376c7b3d43abe9.png)
![\[b=4xyk-x^2\]](//latex.artofproblemsolving.com/1/e/2/1e2bf3f1f817c9d5a9c998f3e60f5c5be50da6e6.png)
![\[t=(x^2+2y^2)k-xy\]](//latex.artofproblemsolving.com/7/b/f/7bf3a222a9322f872886208bb42e442891e1f2a5.png)
![\[c=t^2+k^2\]](//latex.artofproblemsolving.com/8/2/4/824a0dd20e4eda820af525ef413142269ec1d071.png)
- Can have any sign.![\[(\frac{a(a+1)}{2})^2+(\frac{b(b+1)}{2})^2=c^2\]](http://latex.artofproblemsolving.com/2/e/b/2ebe2a3721e17ff9679785373af9d256e9ed353a.png)
![\[a=\mp(p+2xys)p\]](http://latex.artofproblemsolving.com/8/e/6/8e6366d8f0b5d951eee03f71d461474ebf994d38.png)
![\[k=\mp(p+2xys)\frac{s}{2}\]](http://latex.artofproblemsolving.com/9/9/2/9926d595830ae255059729cd89376c7b3d43abe9.png)
![\[b=4xyk-x^2\]](http://latex.artofproblemsolving.com/1/e/2/1e2bf3f1f817c9d5a9c998f3e60f5c5be50da6e6.png)
![\[t=(x^2+2y^2)k-xy\]](http://latex.artofproblemsolving.com/7/b/f/7bf3a222a9322f872886208bb42e442891e1f2a5.png)
![\[c=t^2+k^2\]](http://latex.artofproblemsolving.com/8/2/4/824a0dd20e4eda820af525ef413142269ec1d071.png)
- Can have any sign.
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