- #1

atomicpedals

- 209

- 7

[tex]<p>=\int{\psi* \frac{\hbar}{i} \frac{d}{dx} \psi dx}[/tex]

To what should I be applying the derivative? [itex]\psi[/itex]?

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- Thread starter atomicpedals
- Start date

- #1

atomicpedals

- 209

- 7

[tex]<p>=\int{\psi* \frac{\hbar}{i} \frac{d}{dx} \psi dx}[/tex]

To what should I be applying the derivative? [itex]\psi[/itex]?

- #2

Dick

Science Advisor

Homework Helper

- 26,263

- 621

Of course you would apply it to ψ. What else?

- #3

atomicpedals

- 209

- 7

[tex]<x>=\int{|\psi|^{2}xdx}[/tex]

it would instead be

[tex]<p_x>=\int{\psi * \frac{\hbar}{i} \frac{d \psi}{dx} dx}[/tex]

- #4

Dick

Science Advisor

Homework Helper

- 26,263

- 621

[tex]<x>=\int{|\psi|^{2}xdx}[/tex]

it would instead be

[tex]<p_x>=\int{\psi * \frac{\hbar}{i} \frac{d \psi}{dx} dx}[/tex]

Yes. That's it.

- #5

atomicpedals

- 209

- 7

Right on, thanks.

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