Status: New
Owner:
Labels: Type-Defect Priority-Medium
New issue 3069 by trel...@psu.edu: dsolve gets too many constants for a
first order linear ode
http://code.google.com/p/sympy/issues/detail?id=3069
ode2 = (2*t+3)*Derivative(y(t),t) + (4*t**2 + 12*t+7)*y(t)
sol = dsolve(ode2,y(t))
Comment #1 on issue 3069 by trel...@psu.edu: dsolve gets too many constants
for a first order linear ode
http://code.google.com/p/sympy/issues/detail?id=3069
Digging in, this is a problem with 'separable'. Using the
hint '1st_linear',
this works out fine. Seems first-order linear homoge
Updates:
Labels: NeedsReview smichr
Comment #2 on issue 3069 by smi...@gmail.com: dsolve gets too many
constants for a first order linear ode
http://code.google.com/p/sympy/issues/detail?id=3069
I added more preprocessing to odesimp which handles this, and similar,
situations: https
Updates:
Status: Accepted
Comment #3 on issue 3069 by asmeu...@gmail.com: dsolve gets too many
constants for a first order linear ode
http://code.google.com/p/sympy/issues/detail?id=3069
I agree. See issue 2235 (actually, 1st_linear should go before separable
because the solution i
Comment #4 on issue 3069 by smi...@gmail.com: dsolve gets too many
constants for a first order linear ode
http://code.google.com/p/sympy/issues/detail?id=3069
time we cleaned up the mess that is constant simplification
Do you want to commit https://github.com/sympy/sympy/pull/1050 in the
Updates:
Labels: -NeedsReview -smichr
Comment #6 on issue 3069 by smi...@gmail.com: dsolve gets too many
constants for a first order linear ode
http://code.google.com/p/sympy/issues/detail?id=3069
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Updates:
Status: Fixed
Comment #7 on issue 3069 by smi...@gmail.com: dsolve gets too many
constants for a first order linear ode
http://code.google.com/p/sympy/issues/detail?id=3069
Now,
>>> dsolve((2*t+3)*Derivative(y(t),t) + (4*t**2 + 12*t+7)*y(t))
log(y(t)) == C1 - t**2 -
