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  • Can someone help me with this, - Limit , continuity and differentiability - JEE Main-10

Number of points of non - diffrentiability of f(x) = cosec x in (-3\pi,3\pi) will be 

  • Option 1)

    3

  • Option 2)

    4

  • Option 3)

    5

  • Option 4)

    7

 

Answers (1)

best_answer

As we have learned

Properties of differentiable functions -

Trigonometric and inverse trigonometric functions are differentiable in their respective domain.

-

 

 f(x) = cosec x will not contain in domain x=\pm 2\pi ,0,+\pi out of intervals (-3\pi ,3\pi) so total 5 points of non diffrentiability 


Option 1)

3

Option 2)

4

Option 3)

5

Option 4)

7

Posted by

Himanshu

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