Monday

October 20, 2014

October 20, 2014

Posted by **Sébastien** on Tuesday, January 24, 2012 at 12:44pm.

( 1/2 ( -1 - i√3 )) ^3

thanks for your help

- calculus -
**Steve**, Tuesday, January 24, 2012 at 1:19pmconvert (x,y) to (r,θ)

1/2 ( -1 - i√3 ) = (1,4π/3)

(re^{iθ})^{n}= r^{n}e^{inθ}

(1,4π/3)^{3}= (1^{3},4π) = (1,4π)

in (x,y) that's (1,0)

**Answer this Question**

**Related Questions**

Pre-Calculus - Can someone please help me with this problem? De Moivre’s theorem...

Math - Simplify the following expressions by using trigonometric form and De ...

calculus - Need help for calcul: ( 1/2 ( -1 + i√3 )) ^2 thanks for your ...

precal - De Moivre’s theorem states, “If z = r(cos u + i sin u), then zn = rn(...

Math - Hi i need help for calcul: ( 1/2 ( -1 + i√3 )) ^3 and ( 1/2 ( -1 - ...

Math - Find an equation of the line that bisects the obtuse angles formed by the...

Calculus AP need help! - Use Part 1 of the Fundamental Theorem of Calculus to ...

Calculus - Verify the hypothesis of the mean value theorem for each function ...

Algebra - How would i complete these problems? 1. (√6mn)^5 2. ^3√16x...

maths - I will be thankfull to you if you help me to solve the below problem: 6...