I have a set of 2nd order nonlinear differential equations which I solve numerically. 

odeplot plots the numeric results of the function and first derivatives just fine.

I was wondering if there is anyway to plot second derivatives.

odeplot treats a 2nd derivative as zero.

Although, I don't know  for sure, I believe the RKF45 routine computes them during the integration. Any way to store them?

Any ideas are appreciated.

Thanks