Irrationals
symbol
formula
approx. value
solution to
log 2
0.69
2 = exp x
sqrt 2
1.41
x = 2/x
phi
(1+sqrt 5)/2
1.62
x-1 = 1/x
e
exp 1
2.72
pi
4*arctan 1
3.14
sin x = 0
Last modified: Wed Feb 26 20:21:49 EST 2003