fmincon examples added

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diff --git a/tests/general_tests/fmincon/fmincon_logical11.sce b/tests/general_tests/fmincon/fmincon_logical11.sce
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+// Example with objective function using log functions
+
+function y=fun(x)
+y=log(x(1)+x(2));
+endfunction
+
+x0 = [1,2];
+A=[1,1 ; 1,1/4 ; 1,-1 ; -1/4,-1 ; -1,-1 ; -1,1];
+b=[2;1;2;1;-1;2];
+
+//Output
+//Optimal Solution Found.
+// hessian  =
+// 
+//  - 1.0000001    3.95D-323  
+//  - 1.         - 1.         
+// gradient  =
+// 
+//    1.    1.  
+// lambda  =
+// 
+//   lower: [0,0]
+//   upper: [0,0]
+//   ineqlin: [9.091D-09,1.384D-08,3.304D-09,4.768D-09,1,7.281D-09]
+//   eqlin: [0x0 constant]
+//   ineqnonlin: [0x0 constant]
+//   eqnonlin: [0x0 constant]
+// output  =
+// 
+//   Iterations: 13
+//   Cpu_Time: 0.228
+//   Objective_Evaluation: 14
+//   Dual_Infeasibility: 3.040D-09
+//   Message: "Optimal Solution Found"
+// exitflag  =
+// 
+//  0  
+// fopt  =
+// 
+//  - 9.091D-10  
+// xopt  =
+// 
+//    0.1243037  
+//    0.8756963 
+
+[xopt,fopt,exitflag,output,lambda,gradient,hessian] = fmincon (fun, x0, A, b)