
Manipulate: Tracking symbols which are not stated explicitly
Posted:
Jan 10, 2013 2:20 AM


Hello, I am trying to use the Manipulate command to adjust symbols which are not stated explicitly within the command. Is this possible? I am using Mathematica 7.0.1.0. Consider these examples:
The code below works:
Manipulate[ reprule = {end > endval}; NDSolve[{y''[x] + Sin[y[x]] y[x] == 0, y[0] == 1, y'[0] == 0}, y, {x, 0, end} /. reprule], {endval, 10, 20}]
However, this one tells me that "Endpoint endval is not a real number":
reprule = {end > endval}; Manipulate[ NDSolve[{y''[x] + Sin[y[x]] y[x] == 0, y[0] == 1, y'[0] == 0}, y, {x, 0, end} /. reprule], {endval, 10, 20}]

