NArgMin

NArgMin[f,x] gives a position xmin at which f is numerically globally minimized.

NArgMin[f,{x,y,…}] gives a position {xmin,ymin,…} at which f is numerically globally minimized.

NArgMin[{f,cons},{x,y,…}] gives a position at which f is numerically globally minimized subject to the constraints cons. 

NArgMin[…,x∈reg] constrains x to be in the region reg.

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