Second Partial Derivative Test Intuition

Summary

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: ... Then we classify each critical point using the A discussion of the key ideas in the Welcome to my video series on Multivariable Differential Calculus. You can access the full playlist here: ... Clairaut's theorem, also known as Schwarz's theorem or Young's theorem, says that mixed Why does the Hessian matrix determinant give us information about whether critical points are maxima, minima, or saddle points? This turned out to be a bit longer than I thought, but enjoy! This video derives the gradient and the hessian from basic ideas. It shows how the gradient lets you find the directional