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Which of the following is true about poi...

Which of the following is true about point of extremum x=a of function y=f(x)

A

At x=a , function y=f(x) may be discontinuous

B

At x=a , function y=f(x) may be continuous but non - differentiable

C

At x=a , function y=f(x) may have point of inflection

D

None of these

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The correct Answer is:
A, B, C
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