How do you find the critical numbers for #cos (x/(x^2+1))# to determine the maximum and minimum?
1 Answer
Jul 30, 2016
So the critical point is
Explanation:
Critical point : It is the point where the first derivative zero or it does not exist.
First find the derivative , set it to 0 solve for x.
And we need to check is there a value of x which makes the first derivative undefined.
Set dy/dx=0
So the critical point is