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Error:undefined variable in trapezoidal integration

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Yo mama
Yo mama on 28 Apr 2020
Commented: Rena Berman on 14 May 2020
Ok this is driving me crazy because it seems so simple. All i need to do is integrate from t=0 and t=3. I have the following function and the comments are what I put into the command window. I need to integrate the ydot vector but once I put it in the function is says that ydot is not defined like what.
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Answers (1)

Brian Iwatake
Brian Iwatake on 28 Apr 2020
If you "clear all", then ydot is not there anymore, right?
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Yo mama
Yo mama on 30 Apr 2020
  1. my step size was fixed for the question being asked, the result of my integration was compared to my runge-kutta result for the distance at 3 seconds and I got a percent error of less than one percent - so I think it was spot on, my code only worked when I ran a Sys2ODEsRK4 function as well in another window. My step size needed to be 0.1 explicitely.

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