Q. 75.0( 1 Vote )

# Choose the correct answer.

The function f(x) = |cos x| is

A. everywhere continuous and differentiable

B. everywhere continuous but not differentiable at (2n + 1) π/2, nϵZ

C. neither continuous nor differentiable at (2n + 1) π/2, nϵZ

D. none of these

Answer :

Given that f(x) = |cos x|

From the graph it is evident that it is everywhere continuous but not differentiable at (2n + 1) π/2, nϵZ.

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