Mathematics · 2021
JEE Main · 4 August 2021, Shift 1 · Q89
The number of points in (0,2 π), where the function f: R → R given by f(x)=| sin x|+| cos x| is NOT differentiable, is \ \ \ \.
The number of points in $\displaystyle (0,2 \pi)$, where the function $\displaystyle f: \mathbb{R} \rightarrow \mathbb{R}$ given by $\displaystyle f(x)=|\sin x|+|\cos x|$ is NOT differentiable, is \_\_\_\_.
Official answer
3
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