Complex constant from single root.

AI Thread Summary
To determine the complex constant c such that v = √3 - j is a root of the equation z^6 - c = 0, it is established that there are three distinct roots, each having a conjugate pair. The roots identified include √3 - j and its conjugate √3 + j. The equation can be rewritten as z^6 = c, indicating that c is equal to the sixth power of the roots. The discussion emphasizes the need to express c in terms of square roots and/or fractional multiples of x, while also noting the challenge in finding the remaining four roots. The solution requires converting v into exponential form using the polar representation.
DmytriE
Messages
78
Reaction score
0

Homework Statement


Do not use a calculator for this problem. Express your answers using square roots and/or fractional multiples of x.

Determine the complex constant c such that v is a root of: z6 - c = 0


Homework Equations


v = \sqrt{3} - j


The Attempt at a Solution



I believe the following are true:
1. There are 3 distinct roots for this equation.
2. Each of the distinct roots will have a conjugate pair to ensure there is no middle term.
3. If 2 is true, then two of the six roots are \sqrt{3} -j and \sqrt{3} +j

z6 - c = 0 --> z6 = c. Yes, this is as far as I have gotten. I'm not sure how to figure out the other 4 roots.
 
Physics news on Phys.org
c = z6
v = √3 - j
Use re = r(cosθ + jsinθ)
Write v as exponential
Solve for c
 
Back
Top