Question: What do Float(infinity) and HFloat(0.833333) mean?

Hello friends,

When I solve the optimization problem with restriction (below):

 

NLPSolve( ln(x1) +ln(x2+5), {x1 +x2 <=4}, assume = nonnegative);
     [-Float(infinity),

       [x1 = HFloat(0.0), x2 = HFloat(0.8333333333333334)]]

 

I get the expression  "-Float(infinity)"..

What do Float(infinity) and  HFloat(0.833333) mean?

Thanks for the attention,

 

jean-jacques

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