Khan Academy
Khan Academy: Critical Points and Graphing With Calculus
A video that demonstrate how to find the maximum, minimum and the critical points of a curve.
Khan Academy
Khan Academy: Testing Critical Points for Local Extrema
Finding the local maximum and minimum of a curve.
Sophia Learning
Sophia: Locating the Maximum and Minimum of a Parabola
This video tutorial describes how to determine if the vertex of a parabola is the minimum or maximum. The lesson includes a detailed example.