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lim(x rarr 0) (sin nx[(a-n)nx - tan x])/...

`lim_(x rarr 0) (sin nx[(a-n)nx - tan x])/(x^(2)) = 0`, where n is non-zero positive integer, tehn a is equal to :

A

(n+1)/n

B

`n^(2)`

C

1/n

D

n+1/n

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The correct Answer is:
D
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