| 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.
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