don't know where should i post this.

Find the real part of the complex number (i-1)^3 by using De Moivre's formula

My lecture notes is too brief need help !

thanks ")

Printable View

- Dec 17th 2010, 06:03 AMsaccharineComplex number with De Moivre's formula
don't know where should i post this.

Find the real part of the complex number (i-1)^3 by using De Moivre's formula

My lecture notes is too brief need help !

thanks ") - Dec 17th 2010, 06:13 AMTheCoffeeMachine
Write it in the polar form:

.

De Moivre's theorem tells you that, for any arbitrary and integer , we have:

. - Dec 17th 2010, 06:37 AMPlato
Expand

The real parts occur when .

What do they add up to?