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Let f(x+y) = f(x) . f(y) for all x,y whe...

Let f(x+y) = f(x) . f(y) for all x,y where f(0) `ne` 0. If f(5) =2 and f'(0) =3 , then f'(5) is equal to

A

6

B

0

C

1

D

none of these

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A
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