JEE Advanced2014MathematicsContinuity and DifferentiabilityActual
Let f : R → R and g : R → R be respectively given by f x = x + 1 and g x = x 2 + 1 . Define h : R → R by h x = max ⁡ f x , g x i f x ≤ 0 min ⁡ f x , g x i f x > 0 Then number of points at which h x is not differentiable is_________
Correct answer
0
Step-by-step solution
h x = x 2 + 1 , x ∈ - ∞ , - 1 - x + 1 , x ∈ - 1 , 0 x 2 + 1 , x ∈ 0 , 1 x + 1 , x ∈ 1 , ∞ Hence, not differentiable at x = - 1 , 0 , 1