Continuity and DifferentiabilityHard

Question

The domain of the derivative of the functions f(x) is

Options

A.R -{0}
B.R -{1}
C.R -{-1}
D.R -{-1,1}

Solution

Given, f(x)
f(x) is discontinuous at x = - 1 and x = 1
∴     Domain of f′(x) ∈ R -{-1,1}

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