* Test problem 10.2.2 in the web page
* Test problem 10.3.2 in test problem collection
* Test problem from Dirkse and Ferris 1995

POSITIVE VARIABLES x1,x2,x3,x4;
EQUATIONS f1, f2, f3, f4;

f1.. 3*x1*x1 + 2*x1*x2 + 2*x2*x2 +    x3 + 3*x4 - 6 =g= 0;
f2.. 2*x1*x1 +   x2*x2 +      x1 + 10*x3 + 2*x4 - 2 =g= 0;
f3.. 3*x1*x1 +   x1*x2 + 2*x2*x2 +  2*x3 + 9*x4 - 9 =g= 0;
f4..   x1*x1 + 3*x2*x2 + 2*x3    +  3*x4 - 3 =g= 0;

MODEL DIRKSE /f1.x1, f2.x2, f3.x3, f4.x4/;

x1.l = 1;
x2.l = 1;
x3.l = 1;
x4.l = 1;

* initial points for solution 1;
SOLVE DIRKSE using mcp;

x1.l = 1;
x4.l = 0;

* initial points that for solution 2;
SOLVE DIRKSE using mcp;