Khan Academy: Intro to Complex Number Conjugates

This video continues looking at dividing complex numbers by looking at the conjugate of a complex number. The instructor then uses the conjugate to rationalize the denominator of a rational expression with a complex number in the...

Sal discusses the usefulness of the conjugate of the complex number in this video. First, he shows how to add a complex number and its conjugate graphically and algebraically. Then, he shows how to simplify a rational expression with...

Explains what a zero matrix is, shows examples, and provides some interactive practice exercises. Help is available for exercises if it is needed. A summary chart compares the number zero to the zero matrix.

An introduction to strategies for implementing programming for a particle system. The focus is to keep track of a system of many elements. A sequence of the movie, Star Trek II: Wrath of Khan is used to illustrate particle system which...

In this video lesson students explore complex number by looking at Argand Diagram, magnitude, modulus, argument and exponential form.

Learn how to add or subtract two rational expressions into a single expression.

In daily language, we all use the word curve to mean 'not straight' but does the word curve have the same meaning in math? Can a straight line be a curve? Also, what makes a curve a 'simple curve'?

Learn what it means for polynomials to be factors of other polynomials or to be divisible by them.

An introduction to the most basic building block for programming motion--the vector. In JavaScript referring to a Euclidean vector defined as an entity that has both magnitude and direction.

An introduction to creating a single player version of the memory game using drawing commands and implementing the rules of the game using variables and logic.