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

Let `f(a)=g(a)=k` and the their nth derivatives `f^(n)(a),g^(n)(a)` exixst and are not equal for some n. further if `lim_(x to a)(f(a)g(x)-f(a)-g(a)f(x)+g(a))/(g(x)-f(x))=4` then the value of k is

A

0

B

4

C

2

D

1

Text Solution

Verified by Experts

The correct Answer is:
B
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