## Series: Polynomial Expansions, Laurent, and Series Expansions

Series In any calculus course, the professor and book will introduce (in a lot of depth) the various types of series, convergence, and tests to determine whether or not a series actually converges. Here is a brief rundown of all of these: What does a Series look like? . So, a series is a sequence […]

## Complex Numbers: The Imaginary Number

The Imaginary Number Numbers that have real and imaginary parts are complex numbers. They can be expressed in the form where i is  where . Real numbers are actually a special case of complex numbers. Take the above expression. If b is zero then there is no imaginary part and the number is real. As with […]