Proof of the Second Derivatives Test
12:59
Lagrange Multipliers
13:36
Multi-variable Optimization & the Second Derivative Test
22:52
Green's functions: the genius way to solve DEs
11:52
Second partial derivative test
8:25
Pruebas directas y pruebas por contraposición
9:12
Proof of the Ratio Test
14:11
Khan Academy Video 1 (Gradient vs. Directional Derivative) #khanacademytalentsearch
6:49