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ptc-43860971-Visitor
1-Visitor
December 25, 2011
Solved

odesolve problem

  • December 25, 2011
  • 1 reply
  • 8800 views

Hi

I am a new user of Mathcad, so my first step was to read and used the tutorial, but when I arrived at the "task 3-3" in the solving tutorial i can't do it, in the solve block Odesolve did not work. I try to put the units and the correct labels but there is a problem with the "initial conditions". I put my worksheet for any one who can help me.

thks Claude

Best answer by ValeryOchkov

Claude toto wrote:

ok thanks

In MathCad 15 the symbolic calculation is still present, isn't it?

Claude

Present!

1 reply

V
ValeryOchkov24-Ruby IV
24-Ruby IV
December 26, 2011

Check you units please. See my try in attach.

P
ptc-43860971-VisitorAuthor
1-Visitor
December 26, 2011

Valery

you were right for the init of u(t) (the oscilating force). but that doesn't solve the problem with Odesolve, I try to solve a 1 order ODE with odesolve, no problem it's only need one initial condition, but when I try a simple second order ODE like : my''(x)+ky(x)=0 ( a simple harmonic oscilator ) same problem with the initial conditions, odesolve needs now two initial conditions.

Claude

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