document.write( "Question 675174: I am unsure if graphs can even be explained on this site but any help would be very much appreciated! \r
\n" ); document.write( "\n" ); document.write( "Suppose we have a function: f(x,y) = (x+y)^2
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Algebra.Com's Answer #419697 by Edwin McCravy(20065) $\"\"$ $\"About$

You can put this solution on YOUR website!

That is the equation of a parabolic cylinder.\r\n" );
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document.write( "There is a free 3D grapher you can download here:\r\n" );
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document.write( "http://calculator.runiter.com/graphing-calculator/download-free-graphing-calculator.htm\r\n" );
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document.write( "After downloading it, type (x+y)^2 after z= and it will graph the\r\n" );
document.write( "parabolic cylinder for you.  Keep playing around with it, change\r\n" );
document.write( "the x to 3 and look at f(3,y) which is (3+y)^2. Then look at f(x,2)\r\n" );
document.write( "which is (x+2)^2.  You can move the graph around in any position with\r\n" );
document.write( "the mouse.  Have fun with it!\r\n" );
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document.write( "Edwin

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