Complex Numbers

In this playlist you'll learn all about Complex Numbers - what they are, why they matter, and how to solve a variety of problems that require them. Complex Numbers can be confusing, especially because the most fundamental fact about them seems to contradict one of the most basic things you learn in early mathematics: you can't take the square root of a negative number. In fact, negative numbers have square roots too, and including them in our number system is enormously powerful for unlocking new ways of representing mathematical realities in the world around us.