- #1

- 901

- 3

## Homework Statement

Consider the operator A and its Hermitian adjoint A*.

If [A,A*] = 1, evaluate: [A*A,A]

## Homework Equations

standard rules of linear algebra, operator algebra and quantum mechanics

## The Attempt at a Solution

[A,A*] = AA* - A*A = 1

A*A = (1+AA*)

[A*A,A] = AA*A - A*AA = ???????

How do I even start?