Let f : (…1, 1) … R be a function defined by f(x) = max … If K be the set of all points at which f is not differentiable, then K has exactly -

Limits Continuity and Differentiability

JEE Main 2019 · 10 Jan, Evening shift · Q4190

MathematicsMedium179×since 2002Q4190

Let f : (

-

1, 1)

\to

R be a function defined by f(x) = max

\left\{ { - \left| x \right|, - \sqrt {1 - {x^2}} } \right\}.

If K be the set of all points at which f is not differentiable, then K has exactly -