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`f(x)` is differentiable function at `x=a` such that `f'(a)=2 , f(a)=4.` Find `lim_(xrarra) (xf(a)-af(x))/(x-a)`

A

2a+4

B

4-2a

C

2a-4

D

a+4

Text Solution

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The correct Answer is:
B
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