Comment #7 on issue 1284 by [email protected]: more tests for the
solvers module
http://code.google.com/p/sympy/issues/detail?id=1284
I added a few tests but I didn't pull request yet as I'm facing some
problems.
Problem is that I have to give a list format in assert instead of
dictionary.
This is how it is done previously:-
assert solve(some equation) == [{x: x1}, {x: x2}]
But this does not seem to work for me. I have to give it the following way:-
assert solve(some equation) == [x1, x2]
Also the following tests give failure. I'm not sure if these are bugs or a
mistake on my part:-
1) assert solve(4**(2*(x**2) + 2*x) - 8, x) == [-3/2, 1/2]
2) assert solve(5**(x+1) + 5**(2-x) - 126, x) == [-1, 2]
3) assert solve(log(x+1, 2) + log(x-3, 2) - 5, x) == [7]
1) produces the same answer but four times i.e. [-3/2, -3/2, -3/2, -3/2,
1/2, 1/2, 1/2, 1/2]
2) gives [-1, log(25)/log(5)] which is correct but it should simplify
log(25)/log(5) to 2, right?
3) says not implemented error but it can be reduced to a simple quadratic
equation so I expect sympy to solve it
Note: I also posted this on the mailing list.
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