Find the integral value of n for which ...

Find the integral value of `n` for which `("lim")_(xvec0)(cos^2x-cosx-e^xcosx+e^x-(x^3)/2)/(x^n)` is a finite nonzero number

A

2

B

3

C

4

D

none of these

Verified by Experts

The correct Answer is:

C

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