Instructional Video40:05
3Blue1Brown

Alice, Bob, and the average shadow of a cube

12th - Higher Ed
A story of problem-solving styles, with the central example of finding the average area for the shadow of a cube.
Instructional Video10:55
Math Fortress

Calculus III: Equations of Lines and Planes (Level 8) | Angle Between Planes

12th - Higher Ed
This is the eight video on the equations of lines and planes video series. In this video we will learn how to find the angle between two intersecting planes; we will also learn how to determine the equation of a line between two...
Instructional Video8:26
Math Fortress

Calculus III: Equations of Lines and Planes (Level 7) | Plane Examples II

12th - Higher Ed
This is the seventh video on the equations of lines and planes video series. In this video we go over 4 intermediate examples involving planes.
Instructional Video9:58
Math Fortress

Calculus III: Equations of Lines and Planes (Level 6) | Plane Examples I

12th - Higher Ed
This is the sixth video on the equations of lines and planes video series. In this video we will compare the equations of lines and planes in space. This video will also cover 4 basic examples involving planes.
Instructional Video11:35
Math Fortress

Calculus III: Equations of Lines and Planes (Level 5) | Vector, Scalar, and Parametric Equations

12th - Higher Ed
This is the fifth video on the equations of lines and planes video series. In this video we derive the vector equation of a plane, the scalar equation of a plane and parametric equations of a plane in space.
Instructional Video11:29
Zach Star

A surprising topological proof - You can always cut three objects in half with a single plane

12th - Higher Ed
Zach Star demonstrates a surprising topological proof - you can always cut three objects in half with a single plane
Instructional Video11:53
Professor Dave Explains

Evaluating Surface Integrals

9th - Higher Ed
An introduction to surface integrals.
Instructional Video7:40
Professor Dave Explains

Stokes's Theorem

9th - Higher Ed
Stokes's Theorem is kind of like Green's Theorem, whereby we can evaluate some multiple integral rather than a tricky line integral. This works for some surface integrals too. Let's see how it works!
Instructional Video8:31
Virtually Passed

Reflection Matrix Proof

Higher Ed
The mirror matrix (or reflection matrix) is used to calculate the reflection of a beam of light off a mirror. The incoming light beam * the mirror matrix = outgoing light beam.



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Instructional Video11:23
Zach Star

The real world applications of the dot product

12th - Higher Ed
The real world applications of the dot product
Instructional Video
Khan Academy

Khan Academy: Linear Algebra:defining a Plane in R3 With Point and Normal Vector

9th - 10th
Video shows how to define a plane in R3 using a point on the plane and a normal vector to the plane. Includes a visual representation to help understanding. [13:53]
Instructional Video
Khan Academy

Khan Academy: Calculus: Constructing a Unit Normal Vector to a Curve

9th - 10th
Video showing how to construct the unit normal vector for any point on a curve by first finding the tangent vector, using it to find any normal vector and from there finding the unit normal vector. [10:08]
Instructional Video
Khan Academy

Khan Academy: Vector Dot and Cross Products: Normal Vector From Plane Equation

9th - 10th
Video finding the normal vector to a plane using its equation by first visualizing the vector and the plane and then solving for it.
Instructional Video
Khan Academy

Khan Academy: Linear Algebra:defining a Plane in R3 With Point and Normal Vector

9th - 10th
Video shows how to define a plane in R3 using a point on the plane and a normal vector to the plane. Includes a visual representation to help understanding. [13:53]
Instructional Video
Khan Academy

Khan Academy: Vector Dot and Cross Products: Distance Between Planes

9th - 10th
This video demonstrates a problem about the distances between two planes.
Instructional Video
Khan Academy

Khan Academy: Defining a Plane in R3 With a Point and Normal Vector

9th - 10th
This video shows the equation for a plane in R3 using a point on the plane and a normal vector.