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Transcript

Vectors and the Geometry of Space: Problems Plus

4 hours covering 8 problems on 3D geometry, surfaces, vectors, vector projections, and applications to physics and airplane dynamics. Buckle up!

YouTube - Video notes - Video sections playlist - Vectors and the Geometry of Space playlist

In this video I go over the end-of-chapter Problems Plus advanced math problems for the Vectors and Geometry of Space chapter. There are 8 problems in total and cover 3D geometry, surfaces, vectors, vector projections, and applications to physics and airplane dynamics. It's 4 hours of advanced math so buckle up!

Timestamps:

  • Intro: 0:00

  • Calculus Book Reference: 0:56

  • Sections in Calculus Book Chapter: 1:10

  • Topics to Cover: 2:02

  • Review: Concept Check: 19 Questions: 2:19

  • 1. Problem 1: Tightly packed balls in a box: 2:22

    • Hint: Use analogy problem solving strategy: 3:32

    • Solution: Solving the 2D case first: 4:51

    • Solving the 3D case: 9:32

  • 2. Problem 2: Volume around a box: 18:25

    • Solution: Solving the 2D case first: 19:07

    • Solving the 3D case: 22:19

  • 3. Problem 3: Intersecting planes: 33:57

    • Solution to (a): Symmetric equations for the line: 35:07

    • Solution to (b): Curve of intersection as c varies: 1:02:13

    • Solution to (c): Volume of hyperboloid surface: 1:23:25

  • 4. Problem 4: Playing flying in wind: 1:27:32

    • Solution to (a): Wind velocity: 1:28:30

    • Solution to (b): Modified plane velocity: 1:39:21

  • 5. Problem 5: Sum of vector projections: 1:50:46

    • Recap on the Geometric series: 2:10:31

  • 6. Problem 6: Largest sphere in a sphere: 2:13:27

  • 7. Problem 7: Block on an inclined plane: 2:41:46

    • Solution to (a): Coefficient of static friction: 2:46:29

      Solution to (b): Applying a minimal horizontal force: 2:51:16

      Solution to (c): Minimal horizontal force formula: 3:05:16

      Solution to (d): Maximum horizontal force: 3:15:47

  • 8. Problem 8: Volume of a solid from its shadows: 3:35:32

    • Solution to (a): Volume of largest such solid: 3:37:24

    • Solution to (b): No smallest volume: 4:08:26

  • Outro: 4:11:21

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