JEE Main 2019 Mathematics question
Let S be the set of all points in (−π, π) at which the function, f(x) = min{sin x, cos x} is not differentiable. Then S is a subset of which of the following?
Answer: (D)
Solution
sin x = cos x at −3π/4 and π/4.
Let S be the set of all points in (−π, π) at which the function, f(x) = min{sin x, cos x} is not differentiable. Then S is a subset of which of the following?
sin x = cos x at −3π/4 and π/4.