Mathematica

Divergent integration result
Hello all, I tried to evaluate the integral below, integrandnumcc = Integrate[(D[wcc, {r, 2}]^2 + (1/r D[wcc, r])^2 + 2 v 1/r D[wcc, r]*D[wcc, {r, 2}]) r, {r, 0, 1}] where wcc = (r - r^2) + n (r - r^3); What I am getting is: Integrate::idiv: Integral of -4-4 n+1/r+(2 n)/r+n^2/r+8 r-6 n r-6 n^2 r ... 16 Jun 2010 06:40

how to scale text to a bounding rectangle?
How can I automatically scale Text[] to fit into a bounding rectangle of a size that I specify? For instance, I can get a pretty close result here, but it is not perfect (the text doesn't touch the bottom edge of the rectangle), and "36", {0,0}, and {-1,-1} are all numbers I had to find through trial and err... 24 Jun 2010 05:17

Reading Binary Data from SQL Request
Dear group, I use DatabaseLink to retrieve binary data from a database. So lets say, I retrieve the data as: Needs["DatabaseLink`"]; conn = OpenSQLConnection["myDB"]; data = SQLSelect[conn, "myTable", "myBinaryField"]; Then the type of data[[1,1]] is an SQLBinary-Object, containing a list of bytes, accessib... 16 Jun 2010 06:40

DiscretePlot
I am somewhat puzzled by the following behaviour of DiscretePlot fff = Compile[{x}, x^2]; This works fine: DiscretePlot[fff[x], {x, 1, 10, 0.1}, Joined -> True] This also works, but produces an error message: DiscretePlot[{fff[x]},{x,1,10,0.1},Joined->True] CompiledFunction::cfsa: Argument x at position... 20 Jun 2010 04:49

problem with the usage or implemetation of EllipticF[x,m] and
FullSimplify[JacobiAmplitude [Series[EllipticF[x, m], {x, 0, 10}], m]] should give x + O[x]^10 because the two functions are the inverse of one another. however it gives x - (m x^3)/3 + 1/30 m (2 + 3 m) x^5 - 1/630 m (4 + m (39 + 16 m)) x^7 + ( m (8 + 3 m (120 + 13 m (20 + 3 m))) x^9)/22680 Am I missing s... 15 Jun 2010 03:15

Excel Data Managing
Hi, I import a dataset of three variable from excel to mathematica. The input works but i don't know how to work on it, for example plot it, analyze stationarity. The problem is that they are on this form and Mathematica (with Time Series application) doesn't work. {{{"Year", "Price", "Dividend"}}, {{1871., 77.2... 15 Jun 2010 03:15

Dynamic window popup question
Dear group, I have phase space points ListPointPlot3D[data]. Clicking on point I want the solution, which represents that point to appear. I can achieve this simply by replacing each point by PopupWindow[point, myMakeGraphics[point]] construction, where myMakeGraphics generates this graphics. Thought this... 15 Jun 2010 03:15

Automatic update of variables
Thanks for your responses. I see now that I was too succint in posing the problem. The specific situation is a follows. I have written a module for emulating the behavior of an object that collects the values of a random variable, and then is able to produce simple statistics. The code is the following, statObse... 17 Jun 2010 07:51

Using mathematica to read website
Hi Guys, Is there any way to use mathematica to read all the words of a website, say www.bloomberg.com? Thanks in advance. Best, Kevin ... 15 Jun 2010 03:15

Find value of unknown const that causes integral to
f[x_] = Integrate[BesselI[0, x*t], {t, 0, 1}] HypergeometricPFQ[{1/2}, {1, 3/2}, x^2/4] Plot[f[x], {x, -3, 3}, PlotRange -> {0, 2}] FindRoot[f[x] == 3/2, {x, 1}] {x->2.23039} f[x] /. % 1.5 Bob Hanlon ---- Jason Quinn <jason.lee.quinn(a)gmail.com> wrote: ============= Suppose I have... 13 Jun 2010 05:04