Hi, On Mon, May 10, 2010 at 04:22:16AM -0700, smichr wrote: > If solve had an "as_Eq" option you could do something like > > >> eq = Eq(y + x, 3 - x) > >> solve(eq, y, as_Eq=1) > [y == 3 - 2*x] >
in polys9 there is partial support for this implemented in solve()
(only when inequality solver is used), e.g.:
In [1]: var('x', real=True)
Out[1]: x
In [2]: solve(x**2 - 2*x + 1 > 0, x)
Out[2]: [(-∞, 1), (1, ∞)]
In [3]: solve(x**2 - 2*x + 1 > 0, x, relational=True)
Out[3]: x < 1 ∨ 1 < x
In [4]: solve([x**2 - 1 >= 0, x**2 - 1 <= 0], x, relational=True)
Out[4]: x = 1 ∨ x = -1
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Mateusz
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