- #1
vellum93
- 5
- 0
Homework Statement
Suppose B is a real 2x2 matrix with the following eigenvalue:
[itex]\frac{√3}{2} + \frac{3i}{2}. [/itex]
Find B[itex]^3[/itex].
Homework Equations
One of the hints is to consider diagonalization over C together with the fact
that [itex](\frac{1}{2} + \frac{√3}{2}i)^3 = -1[/itex].
The Attempt at a Solution
I found B by going backwards through the quadratic formula, and found B =[itex]
\begin{pmatrix} 0 & 3\\-1 & √3\end{pmatrix}
[/itex]
How can I do this without the method I used? How can I apply the hint given above?