The introduction to this site remarks, "If you need help in college algebra, you have come to the right place." Their statement is accurate, as the staff members at the West Texas A&M University's Virtual Math Lab have...

This page, from Cut the Not, presents a proof using Euler's formula. Following the proof, users have added their own comments and questions. There is also a list of further resources on complex numbers online.

Written by Tony R. Kuphaldt and Jason Starck, this chapter of All About Circuit's second volume on Alternating Current describes complex numbers: "In order to successfully analyze AC circuits, we need to work with...

This is a short study guide from the University of Maryland's Physics Education Research Group on introducing, interpreting, and using complex numbers. Mathematical equations are included to help students understand the...

In this animated and interactive object, students view the steps for adding complex numbers in Excel. Target Audience: 2-4 Year College Students