MHB Integrating $\cos(mx)$ with Two Variables

Thread starter thereidisanceman
Start date May 13, 2015
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Integration Integration by parts parts

May 13, 2015

thereidisanceman

$$\int x^2\cos(mx)\,dx$$

When integrating this by parts, the $x^2$ will become the $u$ and the $\cos(mx)\,dx$ will become $dv$.

How is the $\cos(mx)$ integrated if there are two variables?

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May 13, 2015

MarkFL

Gold Member

MHB

You are integrating with respect to $x$, and unless $m$ is a function of $x$, then you treat it as a constant. :D

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