definite-integral

Question: If $(n-m)$ is odd and $|m|\,\ne \,|n|,$ then $\int_{0}^{\pi }{\cos mx\sin nx}\,dx$ is

1) $\frac{2n}{{{n}^{2}}-{{m}^{2}}}$

2) 0

3) $\frac{2n}{{{m}^{2}}-{{n}^{2}}}$

4) $\frac{2m}{{{n}^{2}}-{{m}^{2}}}$

Solution:

Explanation: No Explanation

Properties of definite integration

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