Guest

f(x)=cos -1 (cosx), then what is its graph and find it's continuity and differentiability at x=pie and -pie. use graph method . plz reply soon.

 f(x)=cos-1(cosx), then what is its  graph and find it's continuity and differentiability at x=pie and -pie. use graph method . plz reply soon.

Grade:12

1 Answers

Arun Kumar IIT Delhi
askIITians Faculty 256 Points
8 years ago
see this is continuous because cos(x) is continuous so at x=pi or -pi it has to be -1
=> cos-1(x) is same all limits

it will be continuous

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free