How do you evaluate this: INT[e^(sin*pi*x) cos*(pi)x dx] do I let u=sin(pi)x so du/(cos(pi)x)=dx then, I plug in the values but I got a differernt answer from the book...can someone please help?
Last edited by got_jane; February 7th 2008 at 06:19 PM.
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Originally Posted by got_jane do I let u=sin(pi)x so du/(cos(pi)x)=dx The problem is that you're not applyin' the chain rule here. (See my signature for LaTeX typesetting.)
Originally Posted by got_jane How do you evaluate this: INT[e^(sin*pi*x) cos*(pi)x dx] do I let u=sin(pi)x so du/(cos(pi)x)=dx then, I plug in the values but I got a differernt answer from the book...can someone please help? That should help...
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