Q. 57

# Mark (√) against

For continuity left hand limit must be equal to right hand limit and value at the point.

Continuity at x =2.

For continuity at x=2,

L.H.L = R.H.L = f(2) = 1+2 = 3

f(x) is continuous at x = 2

Now for differentiability.       =-1

As, f’(2-) is not equal to f(2+)

f(x) is not differentiable.

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