Web hosting Custom Email SiteBuilder

This just has some equations that I think are very interesting.

This is an equation for cosine, when the angle is in radians. If you don't know what the summation means offhand, this translates into

Believe it or not, I got this from a Fox Trot cartoon!

This is an equation for sine when the angle is in radians. If you don't know what the summation means offhand, it translates into

This I did not get from a cartoon, I got it from an appendix of my physics book. The cosine equation was also there.

This is a strange equation, which my dad told me when I asked him what i to the i was. It is (I don't know why) actually written like this:

I think it's a waste of space myself, but who am I to question it?

This is commonly known, but for those who don't know, e is 2.718281828. It's used in many statistical calculations, such as the one below.

This is the equation for the bell curve, in a form graphable with a calculator or some other tool. s is the standard deviation of the distribution, and m is the mean.

This is one of many equations for p.

This equation is one of the most well known and one of the least understood equations on the planet. Contrary to Joe Schmoe-on-the-street's opinion, this is not Einstein's theory of relativity. It is simply an equation that relates mass and energy. The energy is measured in joules and the mass is measured in kilograms. You might ask, how can you multiply a mass by a speed² and get a measure of energy? Well, a joule is the amount of energy required to accelerate a mass of one kilogram for one second at a rate of one meter per second every second. This is better written as . Now, notice that when you multiply kilograms by a speed², you get . Cool, huh?

Home