Q90Multiple choice
Let f (x) = |sin x|. Then
- (A)f is everywhere differentiable
- (B)f is everywhere continuous but not differentiable at x = nπ, n ∈ Z. π
- (C)f is everywhere continuous but not differentiable at x = (2n + 1) , n ∈ Z.
- (D)none of these 1− x 2 dy