A) \[1\]
B) \[1/2\]
C) \[2\]
D) \[0\]
Correct Answer: C
Solution :
\[\underset{x\to \frac{\pi }{4}}{\mathop{lim}}\,\,\frac{\tan \,x-1}{x-\frac{\pi }{4}}\] \[\left( \frac{0}{0}\,\,form \right)\] Applying I/Hospital's rule, \[=\underset{x\to \frac{\pi }{4}}{\mathop{\lim }}\,\,\frac{{{\sec }^{2}}\,x}{1}=2\]cYou need to login to perform this action.
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