Question

Let $f(x)=5 \operatorname{sgn}\left(e^x\right)-4(x-2)^{2 / 3}$. Then
[Note: sgn k denotes signum function of k.]

• A. $f(x)$ is increasing in $(2, \infty)$
• B. $f(x)$ is decreasing in $(-\infty, 2)$
• C. $f(x)$ has minima at $x=2$
• D. f(x)$ has maxima at $x=2$

Answer 1

Answer: (D)

Correct answer is (d) f(x)$ has maxima at $x=2$