$offlisting * * Equation counts * Total E G L N X C B * 1 1 0 0 0 0 0 0 * * Variable counts * x b i s1s s2s sc si * Total cont binary integer sos1 sos2 scont sint * 4 4 0 0 0 0 0 0 * FX 0 * * Nonzero counts * Total const NL DLL * 4 1 3 0 * * Solve m using NLP minimizing objvar; Variables objvar,x2,x3,x4; Equations e1; e1.. -(sqr(127 - exp(-5*x4)*x3 - x2) + sqr(151 - exp(-3*x4)*x3 - x2) + sqr(379 - exp(-x4)*x3 - x2) + sqr(421 - exp(5*x4)*x3 - x2) + sqr(460 - exp(3*x4)* x3 - x2) + sqr(426 - exp(x4)*x3 - x2)) + objvar =E= 0; * set non-default bounds x4.lo = -5; x4.up = 5; * set non-default levels x2.l = 500; x3.l = -150; x4.l = -0.2; Model m / all /; m.limrow=0; m.limcol=0; m.tolproj=0.0; $if NOT '%gams.u1%' == '' $include '%gams.u1%' $if not set NLP $set NLP NLP Solve m using %NLP% minimizing objvar;