1.

A real valued function f(x) satisfies the functional equation f(x-y) = f(x)f(y)-f(a - x)f(a + y) where a is a given constant and f(0)=1, f(2a-x) is equal to:

Answer»

`F(a)+f(a-X)`
`f(-x)`
`-f(x)`
`f(x)`

ANSWER :C


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