The function is:
Option: 1 continuous on R -{1} and differentiable on R- {-1,1}.
Option: 2 both continous and differentiable on R - {-1}
Option: 3 continous on R - {-1} and differntiable on R - {-1,-1}
Option: 4 both continous and differntiable on R - {-1}
for continuity at x = – 1
so, continuous at x = –1
for continuity at x = 1
L.H.L. = 0
so, not continuous at x = 1
For differentiability at x = –1
so, non differentiable at x = –1
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