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  • Answer please! - Limit , continuity and differentiability - JEE Main-12

Which of the following is not a point of inflexion in y =\sin x

  • Option 1)

    \frac{\pi}{}2

  • Option 2)

    \pi

  • Option 3)

    2\pi

  • Option 4)

    3\pi

 

Answers (1)

best_answer

As we have learned

Point of inflexion -

If at  x = a  the shape of the curve changes from concave to convex from convex to concave then at  x = a is known as the point of inflexion and 

f''(x)=0\:\;\:\:\:at\:\:x=a

-

 

 From graph we see , cocavity remains downward about x= \pi /2 but about \pi ,2\pi ,3\pi it changes , so  x= \pi /2 is not a point of inflection 

 

 

 

 

 


Option 1)

\frac{\pi}{}2

Option 2)

\pi

Option 3)

2\pi

Option 4)

3\pi

Posted by

Himanshu

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