check the notebook
Optimization terminated successfully.
Current function value: 0.284280
Iterations: 36
Function evaluations: 41
Gradient evaluations: 41
fun: 0.2842799203798105
hess_inv: array([[ 2.89580415e+01, -1.04312969e+03],
[-1.04312969e+03, 9.31453478e+04]])
jac: array([-4.20192234e-07, -9.28975706e-09])
message: 'Optimization terminated successfully.'
nfev: 41
nit: 36
njev: 41
status: 0
success: True
x: array([ 19.41147127, 200.26861781])
[1.94114713e-04 2.00268618e+09]
