The Gradient Operator in Vector Calculus: Directions of Fastest Change & the Directional Derivative

Similar Tracks
This Downward Pointing Triangle Means Grad Div and Curl in Vector Calculus (Nabla / Del) by Parth G
Parth G
PDE 101: Separation of Variables! ...or how I learned to stop worrying and solve Laplace's equation
Steve Brunton
Div, Grad, and Curl: Vector Calculus Building Blocks for PDEs [Divergence, Gradient, and Curl]
Steve Brunton
Lec 12: Gradient; directional derivative; tangent plane | MIT 18.02 Multivariable Calculus, Fall 07
MIT OpenCourseWare