Vectors and the Geometry of R2 and R3 Examples

A series of calculus lectures and solutions.

Orthogonal Projections - Scalar and Vector Projections
In this video, we look at the idea of a scalar and vector projection of one vector onto another.

An Introduction to the Cross Product
This video gives the formula for the cross product of two vectors. It discusses geometrically what the cross product is, and do an example of finding the cross product.

Geometry of the Cross Product
Cross product, right hand rule, and geometric description.

Defining a plane in R3 with a point and normal vector

Try out our new and fun Fraction Concoction Game.

Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.

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