: ; Euler's identity http://en.wikipedia.org/wiki/Leonhard_Euler
some pretty hardcore math, but is important in alot of different ways.
The number for pi is: 3.1415926535897932384626433832795
Do you mean pi? pi = 3.1415926535 Circumference of a circle = pi*diameter
If you mean the number pi, pi + pi is usually written as 2pi.
3.14159265358979323864062384626238832795028841971693939937510582097494459230781640628620898628034825342117067 These are the hundred digits of pi
No, since Pi is an irrational number, 2(pi) would still be irrational.
by euler: i=ei(pi)/2 therifore ii = (ei(pi)/2)i=ei^2(pi)/2=e-(pi)/2 ~0.208
4 The formula for circumference is 2*pi*radius, or pi* diameter. since it is 4*pi, just divide by pi.
Euler's formula states that: eix = cos(x) + i*sin(x); where "i" is an imaginary number and "x" is an angle value. Under this reasoning, ei*2(pi) equals 1: ei*2(pi) = cos(2(pi)) + i*sin(2(pi)); ei*2(pi) = 1 + i*(0); ei*2(pi) = 1 + 0; ei*2(pi) = 1. Another contributor: Equivalently, e2i*pi - 1 = 0 That statement brings together, in such simplicity, two of the most important transcendental numbers (e and pi), the basic element of complex mathematics (i) and the two identities of arithmetical operations: addition (0), and multiplication (1).
pi you bi ei
Nobody can prove it because it is not true. It is a real number, though. eix = cos(x) + i*sin(x) Therefore ei*pi/2 = cos(pi/2) + i*sin(pi/2) = 0 + i*1 = i Raising both sides to the ith power, (ei*pi/2)i = ii So that ii = ei*i*pi/2 = e-pi/2 = 0.2079. Gelfond proved that the above value is irrational [transcendental, actually].
oni, sa na ei yo.
"ein Ei" is "an egg" in English.
Circumference of any circle = 2*radius*pi or diameter*pi
enemy infantry
Yo, no or no yo could mean "Not me" or "I haven't/I didn't"
After a thorough search, I have found nothing called El pi. Perhaps the person asking the question means what is Pi? In that case, it is a mathematical constant calculated by the ratio of a circle's circumference to its diameter. It is equal approximately to the value 3.14159.
Ei. Pronounced EYE