# Powell (singular system of two equations in two unknowns)
# written in AMPL by Yu-Ju Kuo and Hans D. Mittelmann, 6/2001
param n;
var x{1..n};
minimize obj:1;
s.t. c1: x[1]=0;
s.t. c2: 10*x[1]/(x[1]+0.1)+2*x[2]^2=0;
data;
param n:=2;
var x:=1 3 2 1;