If we observe the nature of the function $|\sin(x\pi)|$ for $x\in \mathbb{R}$ then this function is continuous everywhere but not differentiable only at $x \in \mathbb{Z}$ (integers). Is my observation correct?
2026-04-09 05:47:44.1775713664
Is $|\sin(x\pi)|$ for $x\in \mathbb{R}$ one of the correct examples of a continuous function which is not differentiable only at integers?
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