- #1
Mayan Fung
- 131
- 14
When I learned about operators, I learned <x> = ∫ Ψ* x Ψ dx, <p> = ∫ Ψ* (ħ/i ∂/∂x) Ψ dx. The book then told me the kinetic energy operator
T = p2/2m = -ħ2/2m (∂2/∂x2)
I am just think that why isn't it -ħ2/2m (∂/∂x)2
Put in other words, why isn't it the square of the derivative, but differentiating it twice?
T = p2/2m = -ħ2/2m (∂2/∂x2)
I am just think that why isn't it -ħ2/2m (∂/∂x)2
Put in other words, why isn't it the square of the derivative, but differentiating it twice?