Comment #1 on issue 1637 by asmeurer: solve([Eq(x+a*y,1), Eq(x+y+z, 1),
Eq(z+3*x)], x, y, z, a) troubles
http://code.google.com/p/sympy/issues/detail?id=1637
I tried it in Mateusz's polys branch (issue 1598) and got:
In [3]: solve([Eq(x+a*y,1), Eq(x+y+z, 1), Eq(z+3*x)],
...: x, y, z, a)
Out[3]: {x: 0, y: 1, z: 0}
…
In [8]: solve([Eq(x+a*y,1), Eq(x+y+z, 1), Eq(z+3*x, 0)], a, y, z)
Out[8]: {a: 1 - x, y: 1 + 2⋅x, z: -3⋅x}
So the traceback is fixed, but it doesn't seem to give the correct solution.
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