Let \[f:R\to R\] and \[g:R\to R\] be continuous functions. Then the value of \[\int\limits_{-\frac{\pi }{2}}^{\frac{\pi }{2}}{\{f(x)+f(-x)\}\{g(x)-g(-x)\}dx}\] is

Let \[f:R\to R\] and \[g:R\to R\] be continuous functions. Then the va

1.	Let \[f:R\to R\] and \[g:R\to R\] be continuous functions. Then the value of \[\int\limits_{-\frac{\pi }{2}}^{\frac{\pi }{2}}{\{f(x)+f(-x)\}\{g(x)-g(-x)\}dx}\] is
A.	\[f(x)g(x)\]
B.	\[f(x)+g(x)\]
C.	0
D.	None of theses
Answer» D. None of theses

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Let \[f:R\to R\] and \[g:R\to R\] be continuous functions. Then the value of \[\int\limits_{-\frac{\pi }{2}}^{\frac{\pi }{2}}{\{f(x)+f(-x)\}\{g(x)-g(-x)\}dx}\] is

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