How To Find The Directional Derivative and The Gradient Vector

This Calculus 3 video tutorial explains how to find the directional derivative and the gradient vector. The directional derivative is the product of the gradient vector and the unit vector. To find the gradient vector, you need to find the partial derivatives of f with respect to x, y, and maybe z for a 3 variable function. Lines & Planes - Intersection:    • How To Find The Point Where a Line Interse...   Angle Between Two Planes:    • How To Find The Angle Between Two Planes   Distance Between Point and Plane:    • How To Find The Distance Between a Point a...   Chain Rule - Partial Derivatives:    • Chain Rule With Partial Derivatives - Mult...   Implicit Partial Differentiation:    • Implicit Differentiation With Partial Deri...   ________________________________ Directional Derivatives:    • How To Find The Directional Derivative and...   Limits of Multivariable Functions:    • Limits of Multivariable Functions - Calcul...   Double Integrals:    • Double Integrals   Local Extrema & Critical Points:    • Local Extrema, Critical Points, & Saddle P...   Absolute Extrema - Max & Min:    • Absolute Maximum and Minimum Values of Mul...   ________________________________ Lagrange Multipliers:    • Lagrange Multipliers   Triple Integrals:    • Triple Integrals - Calculus 3   2nd Order - Differential Equations:    • Second Order Linear Differential Equations   Undetermined Coefficients:    • Method of Undetermined Coefficients - Nonh...   Variation of Parameters:    • Variation of Parameters - Nonhomogeneous S...   ________________________________ Final Exams and Video Playlists: https://www.video-tutor.net/ Full-Length Videos and Worksheets:   / collections