Question:
Mark $(\sqrt{)}$ against the correct answer in the following:
The function $f(\mathrm{x})=|\mathrm{x}| \forall \mathrm{x} \in \mathrm{R}$ is
A. continuous but not differentiable at $x=0$
B. differentiable but not continuous at $x=0$
C. neither continuous nor differentiable at $x=0$
D. none of these
Solution:
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