Homework Help: Advanced Math

Posted by Anonymous on Thursday, April 16, 2009 at 7:22pm.

Find the principle root (-64)1/6. Express the result in the form a+bi.

(2i)^6= -64 = (-64)1/6= 0+2i

I got it wrong, please help.

Advanced Math - bobpursley, Thursday, April 16, 2009 at 7:33pm
you have 64@180 on the complex plane.

the sixth root of that is ..
2@30

in rectangular coordinates...
2cos30+2isin30

Try that.
Advanced Math - Anonymous, Thursday, April 16, 2009 at 7:41pm
Ok but are you sure it's ok for how they want me to express it?

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