If
, then f’(1) is
As, f(x) = 
We know that,
∴ f’(x) = 
⇒ f’(x) = 
⇒ f’(x) = 
∴ f’(1) = 
∴ f’(1) = 5/4
Clearly from above calculation only 1 answer is possible which is 5/4
∴ option (a) is the only correct answer.
2
If, then f’(1) is
As, f(x) =
We know that,
∴ f’(x) =
⇒ f’(x) =
⇒ f’(x) =
∴ f’(1) =
∴ f’(1) = 5/4
Clearly from above calculation only 1 answer is possible which is 5/4
∴ option (a) is the only correct answer.