Let \[f:R\to R\] and \[g:R\to R\] be continuous functions, then the va – McqOptions

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1.	Let \[f:R\to R\] and \[g:R\to R\] be continuous functions, then the value of the integral \[\int_{-\pi /2}^{\pi /2}{[f(x)+f(-x)]\,\,[g(x)-g(-x)]\,dx=}\] [IIT 1990; DCE 2000; MP PET 2001]
A.	\[\pi \]
B.	1
C.	\[-1\]
D.	0
Answer» E.

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