Topic: Electronics Engineering
$f(x)=[\tan^{2}x]$
([] stands for greatest integer function)
- A. $f(x)$ continuous at $x=0$
- B. limit $f(x)$ does not exist as x tend to 0
- C. $f^{\prime}(0)=1$
- D. $f(x)$ not derivable at $x=0$
Answer: D. $f(x)$ not derivable at $x=0$
Explanation: Detailed standard solution.