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Let f(a)=g(a)=k and their nth derivative...

Let `f(a)=g(a)=k` and their `nth` derivatives exist and be not equal for some n.
If `underset(xtoa)lim(f(a)g(x)-f(a)-g(a)f(x)+g(a))/(g(x)-f(x))=4` then find the value of k.

A

4

B

2

C

1

D

0

Text Solution

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The correct Answer is:
A
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