Find an expression for [tex]\frac {d<\hat{p}>} {dt} [/tex] in terms of V(x).

I had a few ideas from my math methods for theoretical phys. class i took a few quarters ago, involving applying the derivative operator to the already derived momentum operator, but so far this class hasn't really tackled any kind of math involving working inside hilbert spaces, so i think a strictly calc based approach may be necessary here. Any hints would be appreciated here, ty you all for the help.