Mathematics · 2019
JEE Main · 11 January 2019, Shift 2 · Q71
Let K be the set of all real values of x where the function f(x)= sin |x|-|x|+2(x-π) cos |x| is not differentiable. Then the set K is equal to:
Let K be the set of all real values of $\displaystyle x$ where the function
$\displaystyle f(x)=\sin |x|-|x|+2(x-\pi) \cos |x|$ is not differentiable. Then the set K is equal to :
Official answer
(4)
$\displaystyle \phi$ (an empty set)
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.