Quantum, matrix and momentum operator

[stalker7d7]

Homework Statement

Write out matrix representation of P.

Also, do P|ψ>

Homework Equations

ψ=ψ₀ + 2ψ₁

ψ₀=(1/∏)^1/4 exp(- u²/2)

ψ₁=(1/∏)^1/4 √2 exp(- u²/2)

P= 1/(i*∏) d/du

The Attempt at a Solution

I've no clue what to do. If I had a ψ_m ψ_n I would, but what do I do with just ψ₀ ψ₁?

 

[vela]

Homework Statement

Write out matrix representation of P.

Also, do P|ψ>

Homework Equations

ψ=ψ₀ + 2ψ₁

ψ₀=(1/∏)^1/4 exp(- u²/2)

ψ₁=(1/∏)^1/4 √2 exp(- u²/2)

P= 1/(i*∏) d/du

The Attempt at a Solution

I've no clue what to do. If I had a ψ_m ψ_n I would, but what do I do with just ψ₀ ψ₁?

What would you do in the former case?