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If the function f satisfies the reation ...

If the function f satisfies the reation `f(x+y)+f(x-y)=2f(x) f(y) Aax,yin RR and f(0) ne 0` then ____

A

`f(x)` is an function

B

`f(x)` is an odd function

C

If `f(2)=a` then `f(-2)=a`

D

If `f(4) =b` then `f(-4) =-b`

Text Solution

Verified by Experts

The correct Answer is:
a,c
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