Question

The graph of $f\left(x\right)$ is given in the figure. $|f\left(x\right)|$ is non differential at $x=($ in the interval $(-1,3)):$

• A. $3\&2$
• B. $1\&2$
• C. $0\&2$
• D. None of these

Answer 1

The correct option is B $1\&2$

Graph $|f\left(x\right)|$ is
Since graph has sharp edge at $x=2$ and $x=1$
$\therefore$ Function is non differential at $x=2$ and $1$