# Model tp030 var x_1 >= 1, <= 10; let x_1 := 1; var x_2 >= -10, <= 10; let x_2 := 1; var x_3 >= -10, <= 10; let x_3 := 1; minimize obj: x_1^2 + x_2^2 + x_3^2; subject to ci_1: x_1^2 + x_2^2 - 1 >= 0; display obj; solve; display obj; display x_1; display x_2; display x_3; display obj - 1; display x_1 - 1; display x_2 - 0; display x_3 - 0;