[SATLUG] [OT] 205.jpg (JPEG Image, 725x275 pixels)

Borries Demeler demeler at biochem.uthscsa.edu
Fri Jun 13 09:01:22 CDT 2008


> 
> What do you square to get -1? Square root is opposite of squaring.
> 
i * i = -1

i is the imaginary number (friend).

Example:

sqrt(-16) = 4 * i

4*4 = 16
i*i = -1
(4i)^2 = -16

-b.


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