Hello everybody, I am trying to model a simple logistical problem in Maple using a double loop and 2 indices to indicate what parameters the solutions belong to. Maple however doesn't give me any output or error in the following setting: p[1] := 1; p[2] := 4; for n to 2 do for s to 10 do EBO[s, p[n]] := sum((x-s)*p[n]^x*evalf(exp(-p[n]))/factorial(x), x = s+1 .. infinity) end do end do THX for all your help in advance, Fred

Hello, I'm a recent arrival at Maple Primes (as in earlier today), and I seem to recall a much older version of either Maple, Matlab, or Mathematica having a 3D plot example of a "Schauberger" tube. I've looked through my old files and can find nothing. These are similar to a tornado or water whirlpool profile, so I'm supposing that cylindrical coordinates are a suggested goemetry. A "decaying radius" spiral looped inside the "Gabriel's Horn" elsewhere on Maple Primes has a similar 3D profile, but the pipes that Herr Schauberger patented in Austria long ago also decreased in pipe diameter as the spiral radius decreased inward.

Hi, is there any other possibility to export Maple 3D graphic into VRML scene with axes and labels? When I use the plot3d(3*sin(x)*cos(y), x=-Pi..Pi, y=-Pi..Pi, style=patchnogrid,axes =framed, tickmarks=[3,3,3],grid=[50,50]); o:=%: vrml(o,`krychle.wrl`,tickback_color=brown,tickfore_color=yellow); i receive the VRML file with axes tickmarks as cubes. For an example of 3D graphics in VRML format with axes and labels see Holodraw. With best regards Roman

/ ranting on I use Win XP home on an Acer, which has an Athlon (do not care for specifica). It installs with a blank space in the directory name as default (which may cause troubles if using Open Maple with MS compilers). Installing Watcom not even gives a warning to prior installed ones (so I hope it does not matter ... say having some modifications in it [well, a backup is never a bad idea before any install ...]). It does not adapt settings from M10 (I think 9.5 -> 10 did so), i.e. global settings and style sheet had to be done again. And: it does not associate M11 to *.mws (classical sheets are my default).

Maple 11, 10, 9,.. do not work under Vista yet. After a tricky installation, File Open and File Save do no work. Mathematica 5.2 and Matlab 2007 run with no problem in the same environment. I would not rush purchasing any version of Maple if it is going to run under Vista.

I have just read a wonderful paper Magic Ink: Information Software and the Graphical Interface. The most memorable section subtitle being interactivity considered harmlful. This is a real treasure trove of wonderful design ideas for interfaces for information-rich applications.

I thought I would take up a little time to write about some of the new plotting features in Maple 11. This post will give an overview of what is in Maple 11 plotting - subsequent posts will give more details on the individual features. Let's look at each of the features mentioned on the plotting enhancements page. All of these are only for 2-D plots.

Hello, I would like to use Maple in Statistics, but I have a problem with a speed of base functions, like generation, Mean, Range and Standard deviation. Maple computes slowly than MathCad. I have 4 test functions: Test of generation speed > restart: > > Digits :=10: > > test3:=proc(N,n) > local i,a,X; > use Statistics in > X := RandomVariable(Normal(0,1)): > for i from 1 to N do > a:=Sample(X,n): > end do: > end use; > end proc: > time(test3(30000,100)); Test of Mean speed > restart: > Digits :=10;

Hello, I need to create a picture in eps format to use it in LaTex Document. I use plotsetup to create it but the output is not worked corretly. In Maple 8 it workes. plotsetup(ps,plotoutput=`plot.ps`,plotoptions=`portrait,noborder`); and then I use some plot command. I am not able to compile the maple output in LaTexPdf. I try to open it in CorelDraw and it is opened, but I am not able to work with it like I am able with Maple 8 output. Why? Is it different format of eps? Could you help me please? How could I create eps file to use in LaTeX? Thank you very much. Vladimir

Hello, I would like to use Maple instead of Matlab, well I rewrite the Matlab code to Maple like following. The output is correct, but it spends more time than in Matlab. Is it possible to rewrite my Maple code to get output faster? restart: linearni_model:=proc(beta,sigma) local n1,n2,Y,X,Y1,Y2,se,se2,t1,t2,t3,t4,vbeta,t,si2,e1,e2,e3,e4,Yp,N,s2,n; use Statistics in X:=Matrix([[1, 1, 1, 1, 1], [1, 1, 1, 1, -1], [1, 1, 1, -1, 1], [1, 1, 1, -1, -1], [1, 1, -1, 1, 1], [1, 1, -1, 1, -1], [1, 1, -1, -1, 1], [1, 1, -1, -1, -1], [1, -1, 1, 1, 1], [1, -1, 1, 1, -1], [1, -1, 1, -1, 1], [1, -1, 1, -1, -1], [1, -1, -1, 1, 1], [1, -1, -1, 1, -1], [1, -1, -1, -1, 1], [1, -1, -1, -1, -1]]);

Hello, I would like to use sum command to compute sum. > A := Matrix(3, 2, {(1, 1) = 1, (1, 2) = 2, (2, 1) = 2, (2, 2) = 3, (3, 1) = 3, (3, 2) = 4}); > sum(A[k, 1], k = 1 .. 3); Error, bad index into Matrix Why it occures an error? If I use sum over list, it works. How can I sum members of 1st column of Matrix? Thanks Vladimir

I was wondering if anyone might know how to print the intermediate steps when using the dsolve function in to solve a 4th order ODE. I get the result of the dsolve function, but I want to see the actual steps that maple takes to get there. Is this feasible at all, or is there another much simpler method that I'm just not finding? Thanks in advance Jimmy Navarski

Does anyone know how use the command VolumeOfRevolution so that its plot output shows an n number of disks, instead of a continuous surface? The Volume Of Revolution Tutor allows one to specify if the output plot is in the form of a continous volume or with disks, but I can't get disks to display work from a worksheet. Thanks, Phil

  restart; kernelopts(version);
  Digits:=14:
  2^(32); evalf(%); identify(%);

        Maple 10.06, IBM INTEL NT, Oct 2 2006 Build ID 255401

                              4294967296
                                         10
                          0.4294967296 10

Error, (in isFuncOfTest) numeric exception: overflow

  restart; kernelopts(version);
  #Digits:=15:
  evalf(hypergeom([1.0,3.0],[2.0],1.04+0.1*I));

        Maple 10.06, IBM INTEL NT, Oct 2 2006 Build ID 255401

  Error, (in evalf/hypergeom/one_f_II) invalid assignment to Digits


It should be ~ -27700/841-21375/841*I as floats with good exactness.