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Question: Answered & Verified by Expert
At how many points between the interval $(-\infty, \infty)$ is the function $f(x)=\sin x$ is not differentiable.
MathematicsContinuity and DifferentiabilityVITEEEVITEEE 2019
Options:
  • A 0
  • B 7
  • C 9
  • D 3
Solution:
2549 Upvotes Verified Answer
The correct answer is: 0
The function $f(x)=\sin x$ is differentiable for all $x \in R$. Therefore the number of points in the interval $(-\infty, \infty)$ where the function is not differentiable are zero.

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