What is this formula

e^ipi +1=0

Eurler's Formula
http://en.wikipedia.org/wiki/Euler's_formula

It's more often in the form e^(i*pi) = -1, but they equate to the same thing. It's Euler's identity, and e = the base of a natural logarithm, i = root(-1) and pi = the ratio of a circle's circumference to its diameter.

Euler's formula (sometimes called identity)

http://betterexplained.com/articles/intu…

http://www.sosmath.com/complex/number/eu…

Regards - Ian

You must mean e^(iπ) + 1 = 0.

It is not actually a formula at all. It is Leonhard Euler's equation relating five fundamental constants of mathematics: 1, 0, π, e, and i.

It's called Eurler's Formula.

~Kevin.

It's the Euler's formula...with trig functions.