#15499: Regression in solve command
------------------------------+------------------------
Reporter: ppurka | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.4
Component: calculus | Resolution:
Keywords: regression | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
------------------------------+------------------------
Comment (by rws):
With 6.8:
{{{
sage: solve([f.gradient()[0]==0,f.gradient()[1]==0],x,y)
[[x == (0.4500000000000001 + 1.65*I), y == (-11/20*I + 27/20)], [x ==
(0.4499999999999998 - 1.65*I), y == (11/20*I + 27/20)], [x ==
(2.1462417074716e-08 + 2.500000008950185*I), y == (-I + 1/2)], [x ==
(-2.146241555952319e-08 + 2.499999991049815*I), y == (-I + 1/2)], [x ==
(-1.220858829829863e-09 - 2.499999997056549*I), y == (I + 1/2)], [x ==
(1.220857414076436e-09 - 2.500000002943449*I), y == (I + 1/2)], [x ==
0.1088483456288377, y == 0.06495922163399628], [x == 2.069089718402096, y
== -0.7854586857514639], [x == -2.088971962616823, y ==
0.9351646132094527], [x == (0.005516942103919547 + 1.152572204234338*I), y
== (-0.05733257794463129 + 2.784086209457084*I)], [x ==
(0.00551694210391972 - 1.152572204234338*I), y == (-0.05733257794463129 -
2.784086209457084*I)], [x == (-0.4 + 1.2*I), y == (-3/5*I - 4/5)], [x ==
(-0.4000000000000001 - 1.2*I), y == (3/5*I - 4/5)], [x == -1, y == -2], [x
== 1, y == 3]]
sage: f.gradient()[0](0.45+1.65*I, (-11/20*I + 27/20))
-1.21597189939003e16 - 3.60287970189640e14*I
sage: f.gradient()[1](0.45+1.65*I, (-11/20*I + 27/20))
-8.89911286368410e16 - 8.92613446144832e16*I
}}}
Doesn't look correct...
--
Ticket URL: <http://trac.sagemath.org/ticket/15499#comment:5>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
