Find the second derivative, (f”(x))
Set (f”(x)=0) and solve for critical candidates
Check where (f”(x)) is undefined
Test the sign of (f”(x)) on intervals around each candidate
Confirm that (f”(x)) changes sign from positive to negative or negative to positive
Substitute the (x)-value into (f(x)) to get the point ((x, f(x)))