# IntMath Newsletter: Unit circle, gmail, graphs

By Murray Bourne, 06 Oct 2010

6 Oct 2010

In this Newsletter:

1. Math tip: unit circles

2. Why do people use gmail most on Saturdays?

3. Math tip: Implicit functions (I heart math)

4. Resource: Free math graph software

5. Friday math movie: Mandelbox Trip

6. Final thought - enthusiasm

## 1. Unit Circle: an Introduction

The unit circle ties together 3 great strands in mathematics: Euclidean geometry, coordinate geometry and trigonometry. Read more: |

## 2. Saturday is gmail day, Monday is not

Why do people access Google maps least on a Sunday? And why is gmail traffic so periodic? Read more: |

## 3. I heart math

We learn about implicit functions in 2-D and 3-D and how they give us familiar shapes. Read more: |

## 4. Free math graphing software

Here are 2 more free math graphing utilities. |

## 5. Friday math movie: Mandelbox trip

Here's an interesting trip through a 3-D mathematical art space, based on fractals. Read more: |

## 6. Final thought – Enthusiasm

Many people struggle with math. Entrepreneur Walter Chrysler, founder of the Chrysler auto company, famously said:

The real secret of success is enthusiasm.

Until next time, enjoy whatever you learn.

See the 6 Comments below.