http://img69.imageshack.us/img69/9352/complext.jpg

Printable View

- January 7th 2010, 11:07 AM.::MadMaX::.Complex numbers
- January 7th 2010, 11:38 AMPlato
.

Now find the three cube roots. One of then is

.

What are the other two? - January 8th 2010, 10:25 PM.::MadMaX::.
- January 9th 2010, 01:14 AMProve It
One of the cube roots is .

All of the cube roots are evenly spaced around the unit circle.

So they are all separated by an angle of .

The radius is 1, so the other roots are at

and

.

Therefore the three roots are

. - January 9th 2010, 09:40 AM.::MadMaX::.
Now I'm really confused! (Thinking)

- January 9th 2010, 10:15 AMPlato
- January 9th 2010, 12:26 PM.::MadMaX::.
So I did good job? :D :D :D

Thank you all,especially you Plato! :) - January 9th 2010, 04:32 PMCaptcha
I was having exactly the same confusion last night. Haha. See here.