Name:
Anonymous
2007-09-26 13:19
ID:wJoLFedN
i^2=-1
what's else good to know
Name:
Skordocott
2007-09-26 14:45
ID:jzXfSJNf
There's a technical sense in which that is 100% of all there is to know about i.
But maybe it's also helpful to know that i^3 = 1/i = i, and that absolutely any formula that is true for i is also true for -i.
Also, it doesn't come up as often, but sqrt(i) = (sqrt(2)/2) (1 +/- i).