Archive for the ‘Mathematics’ Category

A reader asks how to graph f(-x) and -f(x), and what does it mean?

Can you find exact values for the sines of all angles? This guest post from reader James Parent shows how.

A reader is going to take a trigonometry class soon and asks what it's about.

This is a handy and user-friendly graph plotter which works in all major browsers and operating systems.

A reader asked how to find the equation of a parabola from its graph.

Math text books and math software disagree on the correct graph of arccot(x). Which one is right?

Here's a case where accuracy was compromised and people suffered because of it.

The circle is one of the earliest geometric shapes we learn about. Are we sure of its definition?

Here's how to find the derivative of √(sin x) from first principles.

This is an interesting summer project - write some math-related software for Google!