#4841: Update Maxima to 5.17.x (new upstream)
----------------------+-----------------------------------------------------
Reporter: mabshoff | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-3.4
Component: calculus | Resolution:
Keywords: |
----------------------+-----------------------------------------------------
Changes (by mabshoff):
* cc: certik (added)
Comment:
Limits and assumption problems in functional.py:
{{{
File "/home/mabshoff/build-3.2.2/sage-3.2.2-eno/devel/sage-
main/sage/calculus/functional.py", line 19:
sage: limit(a*sin(x)/x, x=0)
<SNIP>
Is a positive, negative, or zero?
}}}
Limit regression, reported to maxima-dev already:
{{{
File "/home/mabshoff/build-3.2.2/sage-3.2.2-eno/devel/sage-
main/sage/calculus/functional.py", line 301:
sage: lim(1/x, x=0)
Expected:
und
Got:
+Infinity
}}}
This is also a limits+assumption issue, but WTF would that fail in
sympy_test:
{{{
sage -t -long devel//sage/sage/calculus/test_sympy.py
File "/home/mabshoff/build-3.2.2/sage-3.2.2-eno/devel/sage-
main/sage/calculus/test_sympy.py", line 60:
: limit((tan(x+y) - tan(x))/y, y=0)
TypeError: Computation failed since Maxima requested additional
constraints (use assume):
Is tan(x) positive, negative, or zero?
}}}
Not sure what happens here, i.e whether this is Maxima's or Sage's fault:
{{{
sage -t -long devel//sage/sage/functions/special.py
**********************************************************************
File "/home/mabshoff/build-3.2.2/sage-3.2.2-eno/devel/sage-
main/sage/functions/special.py", line 847:
sage: spherical_harmonic(3,2,x,y)
TypeError: Error executing code in Maxima
CODE:
sage5 : spherical_harmonic(3,2,x,y)$
Maxima ERROR:
Bad argument to `genfact'
}}}
Version failures, trivial to fix, but also erf seems to have improved:
{{{
sage -t -long devel//sage/sage/interfaces/maxima.py
**********************************************************************
File "/home/mabshoff/build-3.2.2/sage-3.2.2-eno/devel/sage-
main/sage/interfaces/maxima.py", line 999:
sage: maxima.version()
Expected:
'5.16.3'
Got:
'5.17.1'
**********************************************************************
File "/home/mabshoff/build-3.2.2/sage-3.2.2-eno/devel/sage-
main/sage/interfaces/maxima.py", line 1689:
sage: f.numer() # I wonder how to get a real number (~1.463)??
Expected:
-.8862269254527579*%i*erf(%i)
Got:
-.8862269254527579*%i*(1.650425758797543*%i+1.110223024625156E-16)
**********************************************************************
File "/home/mabshoff/build-3.2.2/sage-3.2.2-eno/devel/sage-
main/sage/interfaces/maxima.py", line 2300:
sage: maxima_version()
Expected:
'5.16.3'
Got:
'5.17.1'
**********************************************************************
}}}
Issue in calculus.py:
{{{
File "/home/mabshoff/build-3.2.2/sage-3.2.2-eno/devel/sage-
main/sage/calculus/calculus.py", line 6618:
sage: complex(erf(3*I))
Expected:
Traceback (most recent call last):
...
TypeError: unable to simplify to complex approximation
Got:
(1.110223024625156e-16+1629.9946226005709j)
Trying:
p1 =
plot(xt,Integer(0),Integer(1)/Integer(2),rgbcolor=(Integer(1),Integer(0),Integer(0)))###line
2452:_sage_ >>> p1 = plot(xt,0,1/2,rgbcolor=(1,0,0))
Expecting nothing
Exception exceptions.RuntimeError: RuntimeError('maximum recursion depth
exceeded',) in ignored
<Repeated indefinitely>
The following doctest causes this:
Next we form the augmented matrix of the above system:
sage: A = matrix([[s, 16, 270],[1, s, 90+1/s]])
sage: E = A.echelon_form()
sage: xt = E[0,2].inverse_laplace(s,t)
sage: yt = E[1,2].inverse_laplace(s,t)
sage: print xt
4 t - 4 t
91 e 629 e
- -------- + ----------- + 1
2 2
sage: print yt
4 t - 4 t
91 e 629 e
-------- + -----------
8 8
sage: p1 = plot(xt,0,1/2,rgbcolor=(1,0,0))
sage: p2 = plot(yt,0,1/2,rgbcolor=(0,1,0))
sage: (p1+p2).save()
}}}
There are likely more issues in calculus.py
Cheers,
Michael
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4841#comment:1>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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