RE: Solve

*To*: "mathgroup" <mathgroup at yoda.ncsa.uiuc.edu>*Subject*: RE: Solve*From*: "JUNO::GOLDING" <golding%juno.decnet at ccf4.nrl.navy.mil>*Date*: 11 Feb 91 01:09:00 EST

Larry Cusick writes, > MM on a MacIIcx refuses to > Solve[{a x^2 + b y^2 == 1, a x + b y == 1}, {x, y}] > What's the problem? I don't know what the problem is, but there is an interesting variation of this problem that Mathematica has no problem with. Simply interchange the order of x and y in the variable list and instead of getting stuck in a loop as in the first case, Mma appears to give to proper solutions to the problem. That is why doesn't Mathematica have the same problem with Solve[{a x^2 + b y^2 == 1, a x + b y == 1}, {y,x}] ? Mike Golding