Q11 of 48 Page 345

Prove that

ƒ(x) =is discontinuous at x=0


LHL: =

= 1


RHL: =


= -1



f(x) is discontinuous at x=0


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ƒ(x) = is continuous at x=1


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ƒ(x) = is continuous at x=2


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ƒ(x) =is discontinuous at x=a


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Prove that

ƒ(x) =is discontinuous at x=0