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Problems about NSolve
I want solve a non linear system of 4 algebric equations with the command NSolve. I get the error messages: NSolve::zerosol Scale of possible solution value -8.656393839455443`*^-7 for variable A4 is too small. Must set this value to zero in order to avoid generation of spurious solutions. This may cause the loss of some solutions. and: NSolve::sfail: Subsystem could not be solved forA3 at value 0.00002176757227083404`. The likely cause is failure to detect zero due to low precision. The likely effect is the loss of one or more solutions. Increasing WorkingPrecision might prevent some solutions from being lost. Where can I find informations about these? Thank you very much and sorry for my english.