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Comment #10 on issue 1377 by ondrej.certik: MathML output for Integral and
Differentiate invalid
http://code.google.com/p/sympy/issues/detail?id=1377
I reviewed here:
http://groups.google.com/group/sympy-patches/browse_thread/thread/4ee78ead34671222
patc
Comment #1 on issue 1398 by smichr: solve(1/(5+x)**(S(1)/5)-9, x) fails
http://code.google.com/p/sympy/issues/detail?id=1398
I've been working on tuning up the solve routine and my modifications pass
all the
solver tests, solve the equations that I raised as issues, and solves this
present
c
Comment #2 on issue 1397 by smichr: solve fails for a sum of two fractions
http://code.google.com/p/sympy/issues/detail?id=1397
With the updates (rough) guess_ of issue 1398 I get
>>> A = x**2/(7-x)
>>> A.diff(x)
2*_x/(7 - _x) + _x**2/(7 - _x)**2
>>> solve(A.diff(x), x)
Got strategy 1
>>> 1
Got
Comment #2 on issue 1380 by smichr: solve(2*x/(x+2)-1,x) gives error
http://code.google.com/p/sympy/issues/detail?id=1380
OK with 1398 modification of solver
>>> solve(2*x/(x+2)-1,x)
Got strategy 1
>>> 1
Got strategy 0
>>> 0
[2]
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Comment #3 on issue 1367 by smichr: solve(exp(x)/(8*(a + x)**2), x) fails
http://code.google.com/p/sympy/issues/detail?id=1367
1398 modification of solver leads to no solution if the non-zeroing
exponent is removed.
>>> solve(1/(8*(a + x)**2), x)
Got strategy 1
>>> 1
Got strategy 0
>>> 0
[]
Th
Comment #2 on issue 1398 by Vinzent.Steinberg: solve(1/(5+x)**(S(1)/5)-9,
x) fails
http://code.google.com/p/sympy/issues/detail?id=1398
Great!
Did you notice Fabian's changes (he also wrote guess_solve_strategy())?
http://groups.google.com/group/sympy-patches/browse_thread/thread/7f0eb45d9dc
Comment #1 on issue 1363 by smichr: solve(-3*a/x**(S(1)/2), x) fails
http://code.google.com/p/sympy/issues/detail?id=1363
1398 modification works here
>>> solve(-3*a/x**(S(1)/2), x)
Got strategy 4
>>> 4
Got strategy 0
>>> 0
[]
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Comment #2 on issue 1338 by smichr: assert poly is not None in solve
http://code.google.com/p/sympy/issues/detail?id=1338
The 1398 modification works but a spurious root (r==0) is introduced (I
believe) when
finding the common denominator.
>>> r=symbols('r')
>>> solve(diff((a/r)**12-2*(a/r)**
Comment #5 on issue 1325 by smichr: solve(2**x-5*x, x) gives assertionerror
http://code.google.com/p/sympy/issues/detail?id=1325
1398 modification of solver gives
>>> solve(2**x-5*x, x)
Got strategy 5
>>> 5
[-LambertW(-log(2)/5)/log(2)]
The tsolve bugs remain.
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Comment #6 on issue 1325 by smichr: solve(2**x-5*x, x) gives assertionerror
http://code.google.com/p/sympy/issues/detail?id=1325
Also, attempting solve(exp(log(5)*x)-2**x, x) with the 1398 solver fails:
>>> tsolve(exp(log(5)*x)-2**x, x)
Got strategy 5
>>> 5
Got strategy 0
>>> 0
Traceback (most
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