De Moivre's formula

In mathematics, de Moivre's formula or de Moivre's theorem is an equation named after Abraham de Moivre. It states that for any real number x and integer n, 



The formulation of De Moivre's formula for any complex numbers  (with modulus  and angle ) is as follows:

Here,  is Euler's number, and  is often called the polar form of the complex number .

The formula is very important because it connects complex numbers and trigonometry. It can be proved using the trigonometry form of complex numbers by mathematical induction, with the help of some trigonometrical identities. It can also be proved using Euler's formula as well. 

By using this formula, any equation of the form , where w is complex, can be solved.

 Related pages 
 Euler's formula

 References 

Category:Complex analysis