- #1
bruce999
- 11
- 1
Hello again.
I have a solution for a simple differenttial eqn. "Simpletreb=First@NDSolve[{phi''[t] == -d
Sin[phi[t]], phi[0] == (3π/4), phi'[0] == 0}, phi[t], {t, 0, 1}]"
After some plots and other calculations i need to find the value for phi at t=0.224511 so i input "phi[0.224511]/.simpletreb" but this just outputs "phi[0.224511]". I've also tried "Evaluate[phi[0.224511]/.simpletreb" with no joy.
My .nb file is here: (you have to cut and paste the link I'm afraid) "http://bruce1711.150m.com/simple trebuchet (first) final.nb"
Any ideas anyone?
I have a solution for a simple differenttial eqn. "Simpletreb=First@NDSolve[{phi''[t] == -d
Sin[phi[t]], phi[0] == (3π/4), phi'[0] == 0}, phi[t], {t, 0, 1}]"
After some plots and other calculations i need to find the value for phi at t=0.224511 so i input "phi[0.224511]/.simpletreb" but this just outputs "phi[0.224511]". I've also tried "Evaluate[phi[0.224511]/.simpletreb" with no joy.
My .nb file is here: (you have to cut and paste the link I'm afraid) "http://bruce1711.150m.com/simple trebuchet (first) final.nb"
Any ideas anyone?
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