# Homework Help: Express Eigenvectors in terms of Eigenkets.

1. Mar 13, 2012

### jhosamelly

1. The problem statement, all variables and given/known data

One of the problems in our test is this.

Express the eigenvectors of $J_y$ in terms of the eigenkets of $J^2$ and $J_z$ .

2. Relevant equations

3. The attempt at a solution

I know the matrix of $J_y$ and the operators or eigenkets for $J_y$ ,$J^2$ and $J_z$. I just don't seem to understand the question. Can someone please explain it to me please? What should I do?