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prajendran12-Amethyst
12-Amethyst
July 25, 2015
Question

MATHCAD SIMULTANEOUS DIFFERENT EQUATION

  • July 25, 2015
  • 2 replies
  • 1341 views

I'm trying to solve a simultaneous differential equation.

Do I need to use a solve block (which is only available in the full version) to solve simultaneous differential equation and it would work?

2 replies

L
lturek1-Visitor
1-Visitor
July 26, 2015

DE or systems of DEs can only be solved numerically

You have to use a solve block or one of the standalone solvers (which I guess are also available in the full version only).

I added an arbitrary initial condition and I had to change the first equation as Prime choked on the one you provided. Not sure why but I guess that not both equations are allowed to include derivations of both functions. So I multiplied the first by 2 and subtracted the equations to get a new equivalent equation.

ODE.png

L
LucMeekes23-Emerald IV
23-Emerald IV
July 26, 2015

You don't necessarily need to use a solve block, if you're willing to do some math. But your problem description is not complete as Leopold also pointed out: initial conditions are missing.

It's very well possible that both solutions are equal. This first solution, with X0=0 and Y0=10, leads to:

Success!
Luc

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