Search found 3 matches

by Anvar
Wed Nov 18, 2009 5:40 am
Forum: Vensim
Topic: Simultaneous equation
Replies: 4
Views: 4668

Simultaneous equation

Dear LAUJJL and Bob,

Thank you very much for such quick response.

I will try to use the idea about the influencing the variable in different time steps. I hope it will work.

Thank you once again.
by Anvar
Mon Nov 16, 2009 11:56 am
Forum: Vensim
Topic: Simultaneous equation
Replies: 4
Views: 4668

Simultaneous equation

Dear members, hello: I was taking system dynamics course where I got assignment. And I have some difficulties in it. Actually i am new in vensim, so I will be grateful if you can help me with your advices to avoid the error I am getting in my model and your comments. I am modeling the general flow o...
by Anvar
Sat Oct 10, 2009 3:21 am
Forum: Vensim
Topic: Optimising using constraint
Replies: 24
Views: 19435

optimization

Hello, Could you help me to build optimization model in vensim. I tried it a lot but I couldn't. (I started learning vensim 3 weeks ago). Mavimize utility U=x+y to constraint 2x^2+y^2=54. It is easy to solve using Lagrangian multiplier in paper, but I need to build model using vensim. I will be grat...