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If f(x) = e^(x ) - e^(-x ) -2 sin x -...

If `f(x) = e^(x ) - e^(-x ) -2 sin x - (2)/(3) x^3 ` then the least value of n for which `(d^n )/(dx^n)` f(x) at x=0 is non - zero is

A

2

B

1

C

7

D

either 1 or 2

Text Solution

Verified by Experts

The correct Answer is:
C
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