Tagged Questions
6
votes
1answer
63 views
8
votes
2answers
134 views
Problem with NIntegrate when WorkingPrecision is specified
I am trying to evaluate this integral numerically:
$$
\int_0^{\infty } m \exp (-m) J_1(m){}^2 \, dm
$$
Everything is OK when only the integration method is specified:
...
5
votes
4answers
139 views
11
votes
1answer
115 views
Upon PDF export, edgeless rectangles do not tile perfectly, and corners may be cut. Is this a bug?
Exporting the following as a PDF file
Graphics[{
{Red, Rectangle[{0, 0}, {1, 1}]},
{Green, Rectangle[{1, 0}, {2, 1}]}
}]
does not produce perfectly tiled ...
4
votes
0answers
116 views
Strange result from evaluating a Limit expression
When I evaluate the limit of (1-Cos[x]) Sin[1/x] at x = 0 in Mathematica 9, I obtained ...
9
votes
2answers
136 views
SaveDefinitions->True changes the displayed image
I have a Manipulate[ ] that displays an image with a superimposed Locator object. It works fine when I have ...
2
votes
2answers
174 views
Weird NDSolve behavior with Piecewise (MMA9)
NDSolve in Mathematica 9.0.0 (MacOS) is behaving strangely with a piecewise right hand side. The following code (a simplified version of my real problem):
...
1
vote
0answers
143 views
Is this a bug in ListPicker?
I use Mathematica v9.0.1 Home Edition. I recently modified some code to take advantage of the ListPicker Manipulate control (new ...
10
votes
1answer
113 views
FindInstance returns Indeterminate in version 9, but not in 8
Here is a trivial system of equations in three unknowns for which FindInstance obtains a solution:
...
14
votes
1answer
418 views
Bug in Solve (Mathematica 9)
Just came across the strangest bug under both Mathematica 9.0.0 and 9.0.1. If one enters:
Solve[m == p Sin[x] && -Pi/2 < x < Pi/2, x]
... then ...
25
votes
2answers
348 views
DeleteDuplicates not deleting duplicates
It is not surprising that DeleteDuplicates[{5,5.}] returns {5,5.} because DeleteDuplicates ...
0
votes
0answers
189 views
Mathematica 9's NDSolve treats sum as an integral [closed]
Sum and integral are threated the same by NDSolve in Mathematica 9:
The problem was also in Mathematica 7. I submitted a bugreport to the technical support, they admitted this is a bug, fixed it in ...
2
votes
1answer
265 views
Mathematica 9 behavior with derivative of a sum
In:
D[Sum[Sin[x],x],x]
D[Sum[f[x],x],x]
Out:
1/2 Cos[1/2 (-1 - Pi + 2 x)] Csc[1/2]
0
Function f is undefined, but Mathematica 9 counts it as constant?
...
6
votes
0answers
112 views
Break[] inside ColorFunction
f[x_?NumericQ]:= (Do[Break[],{i,1,2}];x)
Plot[x,{x,0,1},ColorFunction->(ColorData["Rainbow"][f[#]]&)]
Break::nofwd: No enclosing For, While, or Do found ...
14
votes
1answer
1k views
Version 9 Blue Screen or Self-Test Error on Windows 7 64-bit
Update There is now an official response from Wolfram Support on this issue.
Having recently installed Mathematica version 9 64-bit on Windows 7, I keep running into Self-Test Errors evaluating ...
24
votes
2answers
500 views
Template completion
In version 8, if one evaluates
test::usage="test[x,y]";
then types test, then shift-cmd-k (or shift-ctrl-k), a template ...
