LimitsHard

Question

Let f(x) = , then :

Options

A.f(x) is discontinuous for all x
B.discontinuous for all x except at x = 0
C.discontinuous for all x except at x = 1 or - 1
D.none of these

Solution

f(x) =
It is continuous x2 = 1    x = ± 1
Discontinuous at all x except x = 1, - 1

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