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

\[\frac{2n}{{{n}^{2}}-{{m}^{2}}}\]

\[\frac{2n}{{{m}^{2}}-{{n}^{2}}}\]

\[\frac{2m}{{{n}^{2}}-{{m}^{2}}}\]

If \[(n-m)\] is odd and \[|m|\,\ne \,|n|,\] then \[\int_{0}^{\pi }{\co

1.	If \[(n-m)\] is odd and \[\|m\|\,\ne \,\|n\|,\] then \[\int_{0}^{\pi }{\cos mx\sin nx}\,dx\] is
A.	\[\frac{2n}{{{n}^{2}}-{{m}^{2}}}\]
B.	0
C.	\[\frac{2n}{{{m}^{2}}-{{n}^{2}}}\]
D.	\[\frac{2m}{{{n}^{2}}-{{m}^{2}}}\]
Answer» B. 0

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

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