Directional Derivatives | Calculus 3 Lesson 49 - JK Math

How to Find Directional Derivatives (Calculus 3 Lesson 49) ➡️ Download my FREE Multivariable Functions Cheat Sheets: https://www.jkmathematics.com/multiva... 🖥️ Membership Site (community & bonus content): https://www.jkmathematics.com/plus 🌐 My Website: https://www.jkmathematics.com ⭐️ Support Me on Patreon:   / jkmath   In this video you will learn about directional derivatives, or finding derivatives in any direction at a point on a surface with the help of unit vectors. First, we develop the limit definition of a directional derivative. Then, we use it to support the quicker shortcut formula that we will actually use for calculating directional derivatives. And finally, we practice finding directional derivatives given different pieces of information that relate to the direction we are interested in. This video series is designed to help students understand the concepts of Calculus 3 at a grounded level. No long, boring, and unnecessary explanations, just what you need to know at a reasonable and digestible pace, with the goal of each video being shorter than the average school lecture! Calculus 3 requires a solid understanding of concepts from calculus 2, calculus 1, precalculus, and algebra. This includes limits, differentiation, advanced integration techniques, applications of derivatives and integrals, polar coordinates, parametric equations, trigonometric functions, logarithms, factoring, equation manipulation, graphing, and much more. If you are not familiar with these prerequisite topics, be sure to learn them first! Video Chapters: 0:00 What are Directional Derivatives? 18:49 Limit Definition of Directional Derivatives 20:48 Finding the Shortcut Formula 33:08 Directional Derivative Formula 35:57 Example: Using Angle of Direction 42:34 Example: Using a Given Vector 📝 Examples Video:    • Directional Derivatives Examples | Calculu...   ⏩ Next Lesson:    • The Gradient | Calculus 3 Lesson 50 - JK Math   📺 Calculus 3 Playlist:    • Calculus 3   📺 Calculus 2 Playlist:    • Calculus 2   📺 Calculus 1 Playlist:    • Calculus 1   ⚡️Math Products I Recommend⚡️ Graphing Calculator: https://amzn.to/3XuUcB9 Non-Graphing Calculator: https://amzn.to/46hHJ7E Financial Calculator: https://amzn.to/3CRe9s4 Graphing Paper: https://amzn.to/46mAfAr College Rule Paper: https://amzn.to/3NOJaTN My Favorite Pencil: https://amzn.to/3NOFMIB My Favorite Erasers: https://amzn.to/3PumUQB Calculus Workbook: https://amzn.to/3r8SnNP ⚡️Textbooks I Use⚡️ Calculus 1 & 2: https://amzn.to/3PzfI5F Calculus 3: https://amzn.to/46rSy76 Financial Mathematics: https://amzn.to/3ppIVW0 Algebra: https://amzn.to/3Eaq1cy ⚡️My Recording Equipment⚡️ iPad Air: https://amzn.to/3phEug1 Apple Pencil (Gen 2): https://amzn.to/3Nl45MM Tablet Desk Stand: https://amzn.to/4420rPh External Hardrive: https://amzn.to/44pkEyh (Commissions earned on qualifying purchases) Found this video to be helpful? Consider giving this video a like and subscribing to the channel! Thanks for watching! Any questions? Feedback? Leave a comment! Josh from JK Mathematics #calculus Disclaimer: Please note that some of the links associated with the videos on my channel may generate affiliate commissions on my behalf. As an amazon associate, I earn from qualifying purchases that you may make through such affiliate links.