Sometimes in mathematics we like to use letters to represent numbers. The ‘value’ of these letters can change according to certain rules or conditions we are given – hence we can call them variables.

A first course in theory of analytic functions of one complex variable: complex differentiability and the Cauchy-Riemann equations, Cauchy Integral Theorem and Cauchy Integral Formula, Taylor and ...

Anne Arundel County believes it's found a way to help middle-school students get better at math. There are smaller classes at Brooklyn Park Middle School, and teachers take up more individual time ...