Assuming and Integrate
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- Subject: [mg128320] Assuming and Integrate
- From: hamiltoncycle at gmail.com
- Date: Sat, 6 Oct 2012 01:53:12 -0400 (EDT)
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When I try the line below in Mathematica 8 I get the answer 0 which is what I expect when m and n are different but not when m=n. Can anyone explain how to do this correctly?
Assuming[Element[{n, m}, Integers], Integrate[Sin[n*x]*Sin[m*x], {x, 0, Pi}]]
When m=n we should get Pi/2, as in this case:
Assuming[Element[n, Integers], Integrate[Sin[n*x]*Sin[n*x], {x, 0, Pi}]]
cheers, Robert
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