- #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].