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Let f (x+y) =f (x) f (y) for all x and y...

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

A

6

B

3

C

5

D

None of these

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OBJECTIVE RD SHARMA ENGLISH-CONTINUITY AND DIFFERENTIABILITY-Exercise
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  18. If f(x)=(e^(2x) - (1+4x)^(1//2))/(ln(1-x^2)) for x != 0, then f has

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