If f(x)=|{:(cosx,x,1),(2sinx,x^(2),2x),(...

If `f(x)=|{:(cosx,x,1),(2sinx,x^(2),2x),(tan x,x,1):}|`, then `underset(x to 0)lim""(f'(x))/(x)`

A

exists and is equal to 0

B

exists and is equal to `-2`

C

exists and is equal to 2

D

does not exist

Text Solution

Verified by Experts

The correct Answer is:

B

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