Question

if f(x)=1/(x+1) then find critical points

Answer 1

The function ƒ(x) = 1/x has no critical points. The point x = 0 is not considered as a critical point because it is not included in the function's domain.

http://en.wikipedia.org/wiki/Critical_point_%28mathematics%29

Answer 2

critical point is a pint in domain of the function, where derivative of the function becomes zero