Mathematica

MathLink in Vista
Dear All, I've been picking at this problem for the last two days, and I'm pretty much at my wit's end. I'm looking to receive data from canned FORTRAN software from within Mathematica. My sense is that this will be most easily achieved by compiling the necessary code in Cygwin, which I have running on my mach... 28 May 2010 08:13

exporting publishable 3D graphics
I need to export a 3D graphics object generated with ListPlot3D to be used in a publication. I'm compiling with PDFLatex so I need to export to a png, jpg, or pdf file. If I export as a png, the text and axes are pixelated to the extent that the image is unusable. Increasing the resolution doesn't help. I... 28 May 2010 08:13

"Simplifying" expressions to not expand user-defined functions
Hello, First off, I'm a new user, so I apologize for any confusing or non- standard lingo... I have a question about user-defined functions. Suppose I define the following function for the magnitude of the gradient: mg[x_, y_] := Sqrt[x^2 + y^2] mgg[f_] := mg[D[f, x], D[f, y]] If I now use mgg in some le... 27 May 2010 07:03

TableForm questions
Using TableForm[], is there any way to format individual lines of a table to be a different style (such as Bold), or should I punt to Grid[]? Thanks, Michael ... 28 May 2010 08:13

WorkingPrecision and NDSolve
I'm having the same problem. Did you manage to figure it out? Best, Joao ... 27 May 2010 07:03

Problem in Mathematica 7
Dear sirs, I'm working on a Mathematica notebook and package that ran well in Mathematica 5.2. I've made the necessary changes to make it work in Mathematica 7, but there is a problem that I can't solve, and I'd like to get some help. When I try to run the package by writing Needs['name of the file']... 27 May 2010 07:03

the Operate[] function
Dear all, Can anyone tell me what the Operate function is good for? Looking at the help, it says Operate[p, f[x,y]] gives p[f][x,y]. Concentrating on just the rhs above for a moment, the only obvious way to me of attaching a useful meaning to it is that if p is a function that takes another function f, and addit... 27 May 2010 07:03

Integrate expression
Hi, I cannot get Mathematica to integrate the expression below. Any tips would be appreciated. Thanks. FullSimplify[ Integrate[ Product[PDF[NormalDistribution[y, \[Sigma]], Subscript[x, i]], {i, n}] PDF[NormalDistribution[\[Mu], \[Phi]], y], {y, -Infinity, Infinity}, Assumptions -> {\[Sigma] >= 0, \[Ph... 27 May 2010 07:03

ToExpression[ToString[expr]]=E2=89 _expr
Evaluating: ToExpression [ ToString [ 1/3 ] ] I did not expect negative three! Bug? or a lack in my understanding? ... 28 May 2010 08:13

Could you prove this proposition:the i-th prime gap
hi, Andrzej, It is easy to prove this! please read http://en.wikipedia.org/wiki/Bertrand's_postulate the last sentence in section #Better result shows that p[i+1]-p[i]<=i must be TRUE when p[i] is sufficient big. On Sun, Feb 7, 2010 at 12:11 PM, a boy <a.dozy.boy(a)gmail.com> wrote: It has been proved that th... 26 May 2010 08:02