Question

Part of a summation

  • 14 April 2021
  • 2 replies
  • 28 views

Badge

Hello,

Since I'm new to aims, I have (I think) a simple question;

How can I do a part of a summation?

So for example; I've got x1, x2, x3, x4 and x5 as my sets. In my mathematical model is one constraint:  x5 = 10*x1 + 18*x2. How do I get this in AIMMS?


2 replies

Userlevel 5
Badge +2

Hello @Lau, your question is not clear. 

 

If x1, x2, … x5 are sets, then how do you want to apply a constraint on sets ?

 

I suppose you mean x1, x2 .. x5 are elements in your set with index i, and you have a variable - say abc(i), and the constraint is 

 

abc(x5) = 10*abc(x1) + 18*abc(x2) 

 

You can write this constraint pretty much like above, just enclose the element names in single quotes. 

 

abc(‘x5’) = 10*abc(‘x1’) + 18*abc(‘x2’) 

 

Is this correct ? If not, can you clarify ? 

Hi @Lau 

Are you able to clarify your question? Or were you able to solve it yourself?

 

Thanks

Reply


Didn't find what you were looking for? Try searching on our documentation pages:

AIMMS Developer & PRO | AIMMS How-To | AIMMS SC Navigator