- #1

magicfountain

- 28

- 0

## Homework Statement

Evaluate the commutator [itex]\left[\frac{d}{dx},x\right][/itex]

## Homework Equations

[itex]\left[A,B\right]=AB-BA[/itex]

## The Attempt at a Solution

[itex]\left[\frac{d}{dx},x\right]=1-x\frac{d}{dx}[/itex]

I don't know how to figure out [itex]x\frac{d}{dx}[/itex].