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Question

f(x) = {x|x|,if x <01, if x0

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Solution

Here, f(x) = {x|x|,if x <01, if x0

LHL= limx0 f(x) = limx0 x|x|

Putting x=0-h as x0.when x0

limh0 0h|0h| = limh0 h|h|=1 |h|=h

RHL = limh0+ f(x)=-1

Also, f(0)=-1 LHL=RHL=f(0)

Thus, f(x) is continuous at x=0 There is no point of discontinuity for this functions f(x).


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