opt01_output.txt

>> opt01_run
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Running testcase_1:  exact solution (2,-1)
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Newton method:
Gradient is within tolerance, x likely a local optimum.
Optimization required 8 function/gradient evaluations

Newton method produced (2.0000000e+00,-1.0000000e+00)

Value of F(X) = 1.9714253e-24

Secant method:
Gradient is within tolerance, x likely a local optimum.
Optimization required 13 function/gradient evaluations

BFGS   method produced (2.0000000e+00,-1.0000000e+00)

Value of F(X) = 3.9936083e-30

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Running testcase_1 as least squares problem: 
Exact solution (2,-1)
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Gradient is within tolerance, x likely a local optimum.
Optimization required 6 function/gradient evaluations

Gauss-Newton produced  (2.0000000e+00, -1.0000000e+00)

Norm of RES(X) = 2.5337512e-12