- #1
cortozld
- 11
- 0
Homework Statement
find the square root of: 4+4(sqrt3)i
put the answer in a+bi form
Homework Equations
finding the nth roots:
√(r(cos(theta)+isin(theta)))=√r(cos(theta+2(pi)(k)/(n))+isin(theta+2(pi)(k)/(n)
where k=0,1
The Attempt at a Solution
first i converted my equation to trigonometric form: 8(cos(pi/3)+isin(pi/3))
then using "finding the nth root" equation above i got: 2√2(cos(pi/6)+isin(pi/6) and 2√2(cos(7pi/6)+isin(7pi/6)
i then converted the two answers to a+bi form and got 2√6+√(2)i and -2√6-√(2)i
im pretty sure i did something wrong. If u need me to go more in depth on anything just post a comment