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 Author Comment/Response Dean 07/29/12 12:51pm Hi, I'm having a problem with Mathematica v8.0.0.0 (Windows). What ought to be a very simple operation appears to be stuck in an infinite (or extremely long) evaluation. The operation is this: SolveAlways[ (a + b) (1 - r^2) + c r Sqrt[1 - r^2] == 0, {r}] The obvious solution is {{a -> -b, c -> 0}}, but it never seems to get there. However if I swap the c with the (a+b) it then works fine: SolveAlways[ c (1 - r^2) + (a + b) r Sqrt[1 - r^2] == 0, {r}] rapidly yields: {{a -> -b, c -> 0}} Is this a bug in Mathematica, or am I missing something here? I'd appreciate some help, thanks. URL: ,

 Subject (listing for 'Mathematica evaluation not completing') Author Date Posted Mathematica evaluation not completing Dean 07/29/12 12:51pm Re: Mathematica evaluation not completing Bill Simpson 07/30/12 11:37am Re: Re: Mathematica evaluation not completing Dean 07/31/12 11:52pm Re: Mathematica evaluation not completing Forum Modera... 08/01/12 11:27am Re: Re: Mathematica evaluation not completing Dean 08/02/12 4:11pm
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