In the attached file, I am solving a diff eqn numerically, and the results are interpolating fnc. I am calculating two other fnc (x and y positions of a baseball) with NIntegrate. I now want to do a parametric plot, but it does not work, although the x and y pos plot with no problem. I need help!
Thanks! So, it is some memory effect of Mathematica? or some reserved symbols? I also noticed you added First @NDSolve.. What does this do?
and read the text then you see What does this do.