A) 1
B) 0
C) ?1
D) None of these
Correct Answer: B
Solution :
\[\underset{x\to 0}{\mathop{\lim }}\,\frac{f(x)}{x}=\underset{x\to 0}{\mathop{\lim }}\,\frac{f(x)-0}{x-0}=\underset{x\to 0}{\mathop{\lim }}\,\frac{f(x)-f(0)}{x-0}\] \[={{\left. {f}'(x) \right|}_{x=0}}\]\[={{\left. {{\tan }^{4}}x \right|}_{x=0}}=0\]
You need to login to perform this action.
You will be redirected in
3 sec
