Mathematica

integral of exponential
Hello all, I am trying to solve an integral with Mathematica, but I do not succeed. I am wondering whether the integral cannot be solved, or whether Mathematica cannot solve the integral, or whether I am doing something wrong. Details: * Mathematica does not seem to be able to solve the integral below: ... 10 Nov 2009 06:58

Simplification problem updated
On 8 nov, 13:08, olfa <olfa.mra...(a)yahoo.fr> wrote: Sorry There is a little mistake in the names of variables: here is the first system updated again: (z1==z2 && x1*t1==x2*t2)||(z1+x1*t1==z2+x2*t2) why this system is not simplified into (z1+x1*t1==z2+x2*t2) by fullsimplify or booleanminimize ?is there another... 9 Nov 2009 06:39

Text on a curve
Text on a curve Hi: Using the following Mathematica 6.0.1 code, I get a nice picture as follows: Module[{f, fs, t}, f[t_] = {Cos[t] + Sin[t], Sin[t]}; fs[t_] = D[f[t], t] // N; h = Graphics[Rotate[Style[Text[" T"], 14], 90 Degree]]; Show[Graphics[{Arrowheads[{{Automatic, Automatic, h}}], {Red, ... 10 Nov 2009 06:58

ODE with complex coefficients
Does anyone have an example of a 1st order ordinary differential equation (initial condition type) with complex coefficients that can have oscillations? --V. Stokes ... 8 Nov 2009 07:28

Thikness of edges in a 3D graph
Hello, I'm beginner in Mathematica ! I need some help to draw a 3D graph with different edge's thikness Can someone help me ! I give here an example of my graphs ! Thank's in advance cherif Rahal GraphPlot3D[{1 -> 2, 1 -> 4, 1 -> 5, 2 -> 3, 2 -> 6, 3 -> 4, 3 -> 7, 4 -> 8, 5 -> 6, 5 -> 8, 6 -> 7, 7 -> 8, 5 -> ... 9 Nov 2009 06:39

Passing function arguments as lists of replacement rules
Leo, This is certainly an interesting question and it is very worthwhile writing routines that make it easy to use Mathematica for your particular purposes. I call them convenience routines. There may be many ways to do this and you may get many suggestions, including dynamic input. Here is one other possibility... 7 Nov 2009 07:05

Complex solutions to simple equations
I want the solutions to x^n=1 to appear in the form r(cos theta +isin theta) and then to graph them on an Argand diagram. Any advice given would be much appreciated. ... 12 Nov 2009 06:11

Can't figure out how to include syntax coloring in Printout
How can it be so hard.....I want to print in exactly the "printout" environment, except I want those handy syntax colorations to be included. Is this possible? Thanks, Adam ... 8 Nov 2009 07:28

Monitoring using Mathematica
Hi there, I would like to write monitoring applications in Mathematica using Dynamic(Module) and Refresh, etc. An example is monitoring an RSS feed. I would like the interface to stay responsive, hence a simple Module with an infinite loop or something would not work. The "problem" with Dynamic constructs i... 7 Nov 2009 07:05

Writing a graphic to a notebook, cont
As usual, I found the work around a few minutes after posting. I guess the right way is to build all the cells first, then create the document in one shot using CreateDocument. I was trying to create a document, then write to it cell by cell. Should work, and I still don't understand why it doesn't, but CreateD... 7 Nov 2009 07:06