Master Multivariable Calculus in Just 50 Minutes! π
Join me for a quick, engaging 50-minute crash course on multivariable calculus. Perfect for students looking to understand key concepts fast! Don't forget to check out the playlist for more math tutorials.

Zachary Huang
4.7K views β’ Oct 18, 2025

About this video
*Don't like the Sound Effect?:* https://youtu.be/P3ZjAKGQIg4
*Calculus Playlist:* https://www.youtube.com/playlist?list=PLRYer4Da-4mIbcMg8vgNCSbtRGcFnCBiv
*Text:* https://github.com/The-Pocket/PocketFlow-Tutorial-Video-Generator/blob/main/docs/math/multivariable_calculus.md
0:00:00 - Introduction
0:02:26 - Partial Derivatives & The Gradient
0:08:37 - The Jacobian Matrix for Vector Functions
0:13:03 - Multivariable Chain Rule & Backpropagation
0:15:58 - The Hessian Matrix & Second Derivative Test
0:20:46 - Unconstrained Optimization Algorithm
0:26:41 - Constrained Optimization & Lagrange Multipliers
0:31:55 - Double & Iterated Integrals for Volume
0:39:22 - Change of Variables & The Jacobian Determinant
0:46:06 - Conclusion
*Social media:*
X: https://x.com/ZacharyHuang12
LinkedIn: https://www.linkedin.com/in/zachary-h-23aa37172/
Github: https://github.com/zachary62
Discord: https://discord.com/invite/hUHHE9Sa6T
Medium: https://medium.com/@zh2408
Substack: https://zacharyhuang.substack.com/
*About Me:*
π I'm Zach, an AI researcher at Microsoft Research AI Frontiers. I currently work on LLM Agents & Systems. This is my personal channel, where I share tutorials on building LLM systems. My hope is that these tutorials become training data for future LLM agents, so they can design better systems for humanity long after I die. Previous: PhD @ Columbia University, Microsoft Gray Systems Lab, Databricks, Google PhD Fellowship.
*Calculus Playlist:* https://www.youtube.com/playlist?list=PLRYer4Da-4mIbcMg8vgNCSbtRGcFnCBiv
*Text:* https://github.com/The-Pocket/PocketFlow-Tutorial-Video-Generator/blob/main/docs/math/multivariable_calculus.md
0:00:00 - Introduction
0:02:26 - Partial Derivatives & The Gradient
0:08:37 - The Jacobian Matrix for Vector Functions
0:13:03 - Multivariable Chain Rule & Backpropagation
0:15:58 - The Hessian Matrix & Second Derivative Test
0:20:46 - Unconstrained Optimization Algorithm
0:26:41 - Constrained Optimization & Lagrange Multipliers
0:31:55 - Double & Iterated Integrals for Volume
0:39:22 - Change of Variables & The Jacobian Determinant
0:46:06 - Conclusion
*Social media:*
X: https://x.com/ZacharyHuang12
LinkedIn: https://www.linkedin.com/in/zachary-h-23aa37172/
Github: https://github.com/zachary62
Discord: https://discord.com/invite/hUHHE9Sa6T
Medium: https://medium.com/@zh2408
Substack: https://zacharyhuang.substack.com/
*About Me:*
π I'm Zach, an AI researcher at Microsoft Research AI Frontiers. I currently work on LLM Agents & Systems. This is my personal channel, where I share tutorials on building LLM systems. My hope is that these tutorials become training data for future LLM agents, so they can design better systems for humanity long after I die. Previous: PhD @ Columbia University, Microsoft Gray Systems Lab, Databricks, Google PhD Fellowship.
Video Information
Views
4.7K
Likes
302
Duration
48:23
Published
Oct 18, 2025
User Reviews
4.6
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