I want to plot a wavefunction with generic length L, without defining L as a particular length. The function is

`Subscript((Psi), n)(n_) := (630/L^9)^(1/2) x^2 (L - x)^2`

and I want to plot

`Plot(Subscript((Psi), n)(1), {x, x0, xf})`

where x0=0 and xf=L. I am setting n as a constant, so only x and L are variable. If I define L to be a number, it plots fine, but the plot will look the same no matter what L is, with `Subscript((Psi), n)(0)=0`

, `Subscript((Psi), n)(L)=0`

, maximum at L/2, etc.

I am wondering if there is a way to plot this on a domain in terms of L.