* Test problem 10.1.6 in the web page * Test problem 10.2.9 in test problem collection * Test problem from Cottle et al 1992 * For lambda = 10 SETS J /1*4/; alias(I,J); PARAMETER M(I,J) matrix/ 1.1 11. 1.2 0. 1.3 10. 1.4 -1. 2.1 0. 2.2 11. 2.3 10. 2.4 -1. 3.1 10. 3.2 10. 3.3 21. 3.4 -1. 4.1 1. 4.2 1. 4.3 1. 4.4 0. /; PARAMETER q(j) vector/ 1 50. 2 50. 3 10. 4 -6. /; VARIABLES x(J); EQUATIONS eq(I); eq(I).. sum(J, M(I,J)*x(J)) + q(i) =e= 0.0; MODEL COTTLE /eq.x/; x.lo(J) = 0.0; SOLVE COTTLE using mcp; q('3') = 23; SOLVE COTTLE using mcp;