Originally Posted by

**zhu1984** I am not sure that I post at the right palce, because I don't know which topic my problem should belong to. So sorry for that.

Given some variables a1, a2, a3... an, and some constraints based on these variables, like:

a1 + a2 >0,

a3 - a5 >0,

a4 - a3 + a2 <0,

....

How to get a solution for variables, that maximun the positive number of variables. That means, make as much of

the variables positive. I even don't know which area this topic should belong to. Please help. Thanks in advance!

steve