fun-lim

Question: $\underset{x\to 0}{\mathop{\lim }}\,\left[ \frac{\sin (x+a)+\sin (a-x)-2\sin a}{x\sin x} \right]=$



1) $\sin a$
2) $\cos a$
3) $-\sin a$
4) $\frac{1}{2}\cos a$
Solution: Explanation: No Explanation
Limits

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