tough integration

Ratch

Joined Mar 20, 2007
1,070
jut,

anybody know how to integrate...

t*cos(wt)e^(-st)dt
I do, but it's a toughie. You do it by integrating by parts. http://www.math.hmc.edu/calculus/tutorials/int_by_parts/ . But since it is a product of three terms, you have to expand the formula in the link to handle three terms. You are in for a pile of algebraic manipulation if you try to do this one. Best to look it up in a table of integrals and don't reinvent the wheel again.

Ratch
 
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