Video Lesson (Calculus)
Video Tutorial: Introduction to the Second Derivative Test
This free video tutorial provides a brief introduction to the Second Derivative Test in Calculus.
Where the first derivative test is a method used to determine whether critical points are maxima or minima, the second derivative test is used to test concavity for a critical point. If the derivative of a function at a critical point equals zero and the second derivative of that function at that point is positive, you have a minimum (min) and a concave up curve.