Hi, how do you go about integrating this: sin(t)*cos(n*t) with respect to t? Thanks
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$\displaystyle \sin (x)\cos (y) = \frac{{\sin \left( {x - y} \right) + \sin \left( {x + y} \right)}} {2} $ can you continue?
Well, assuming n is a constant, then use this rule to split the integral up into something more manageable. $\displaystyle \sin (mx)\cos (nx) = \frac{1} {2}\left[ {\sin (m - n)x + \sin (m + n)x} \right] $ Let m=1 and n=n.
thank you guys.. i can do it now!
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