- #1

ReidMerrill

- 68

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## Homework Statement

*The group velocity of a wave is given by the equation*

V

Prove that the group velocity of a de Broglie particle wave is equal to the ordinary velocity of the particle. Assume the potential energy is equal to zero

V

_{g}= dv/d(1/λ)Prove that the group velocity of a de Broglie particle wave is equal to the ordinary velocity of the particle. Assume the potential energy is equal to zero

## Homework Equations

v=h/λ

λ=h/mv

## The Attempt at a Solution

I don't know how to start this. None of this was covered in lecture. Any help would be greatly appreciated