Science:Math Exam Resources/Courses/MATH110/April 2016/Question 05 (e)/Hint 1

Calculate the derivative, and determine the intervals where $f^{\prime }(x)>0$ and $f^{\prime }(x)<0$. When $f^{\prime }(x)>0$, $f(x)$ is increasing, while $f^{\prime }(x)<0$, $f(x)$ is decreasing.