Unanswered Questions

This page lists MaplePrimes questions that have not yet received an answer
The enclosed file has 2 document blocks. As far as I can tell, each block is identical except for the name of a procedure defined in it. When I go into Block A and select Format/Collapse Document Block, the procedure does not disappear. When I go into block B, it does. I'd appreciate it if someone could tell me why the difference. -Thanks View 2292_Georgeworksheet15.mw on MapleNet or Download 2292_Georgework
I have developed a Maplet tutorial in which the output of the Maplet Evaluate is an X-Y plot displayed using the Maplet Plotter element. I would also like the Maplet to display the numerical X-Y data in a format that would allow the students to simply copy and paste the data directly into an Excel document so that they can carry out additional analysis of the data. Any suggestions?
I installed Maple T.A. 2.5 on Fecora Core 4, and it can be started on the XWindow. I added the command "MapleTA_installed_dir/bin/mapleta.sh start" at the buttom of the script /etc/rc.d/rc.local, and I hopeed Maple T.A. service can be started when I reboot the system. But It doesn't work !! That means I have to go to the front of the machine, then I can start Maple T.A. service. It's very inconvenient for me. The following message is came from logs/mapleta.out loading... Root Empty Class loading... Maple T.A. Demonstration Class Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.
Hi, I am trying to use fsolve to find the roots of p non-linear equations. These vary from 2 dimensional to, so far, 5 dimensional. I'm really trying to minimize the log likelihood of an ARCH time series: L := (t) -> 1/2*T*log(2*Pi)+1/2*Sum(log(h(t)),t = p .. T)+1/2*Sum(y[t]^2/h(t),t = p .. T): where h := (t) -> alpha[1] + alpha[2]*y[t-1]^2 + alpha[3]*y[t-2]^2 ... + alpha[p]*u[y-p]^2: and y[t] are observed data. I've used the p partial derivatives to solve for dL/dalpha=0 using fsolve and intervals alpha=0..1. Occasionally, it works fine and estimates the parameter vector alpha reasonably. However, sometimes it takes about 30-60 seconds and just returns the equation and no answer:
I have been creating a document and had to create a table. I made a mistake, deleted the table and then tried to redo it but I am not allowed use the following functions:table, plot, spreadsheet, and sketch. These four are now in very pale type. How can I recover them? Thank you. Blake
I'm currently working on a school project, the issue is to find approximately the speed of a processor. I made a script which gives the time necessary to calculate a big factorial (10000! for instance). This time (gived by the function time()) is the total CPU time needed to calculate this factorial. But know, I need to know the total number of processor cycle per instruction (CPI) necessary to calculate the factorial. I explain : maybe you already know that the processor run by cycles which has a link with the frequency of the processor. If i can evaluate the number of processor cycle necessary to make a multiplication or the calculation of a factorial (even if this number is approximate) I would be able to find the speed of my processor.
ok back again ! can maple do elasticity ? and cross elasticity let say I have,like the other example I use all the time. d(pc,pt)=2000+1000pt-2Pc and s(pc)=23pc now how can I do the cross- elasticity?(or do I just say the elasticity) of d(pt,pc) against pt. knowing that pt=4 and that pc=2. thank you very much ! peace ! p.s. : if you need more info please do tell.
When using the Plotter element in a Maplet, one of the options is (copied from the help file): delay = posint The delay in milliseconds between frames. The default value for this option is 100. So far, if I set this above 1000, the animation will not play. 1000 works and anything below it. Does this mean I cannot have my animation play slower than one second intervals between frames? If this is the upper limit, does anyone have a suggestion for how to get around this? One thing I was thinking was using the Student[Calculus1][ApproximateInt] command (this is what I'm animating) with the partition value set at different intervals corresponding to a function, t, 2*t, 4*t, etc., just like the actual animation does. But I could have my plotter updated manually using a time delay function that Will gave me previously on here. That's a lot of extra code, though; delaying the plot speed even more would work much better.
Hello! I have two questions: 1) If I include the package \usepackage[latin1]{inputenc} in the preamble of my latex file, I got an error. Is it possible to circumvent it? 2) When I'm writing Maple questions (\begin{question}{Maple}...), and when I use de edu translator I also got some errors. Any help? Thank you very much. Gaspar.
i've been trying to evaluate this particular expression:
assume(x::real,0<x,x<1); is(x < tan(x);

and I keep getting a FAIL. Any ideas? is there something i'm not assuming? not enough info?
Given an implicit representation of a 3D surface, for example: 1 = 3/(z^2+3)*exp(-1/2*(3*y^2+2*x^2+x^2*z^2-2*y*x*z-12)/(z^2+3)) does Maple have a function to numerically integrate its volume? I was hoping to avoid the nuisance of computing the bounds on x,y and z myself and then performing the triple integration (I tried this, but the third integral hung Maple up...I gave up after it ran for 24 hours). The implicit plot seems to work fine, which shows a nice blob. This should be fairly easy to integrate... Thanks, Matt
I have a maple worksheet (attached) that calculates a 2-D convolution. Should be easy, I would guess. The convolution of a gaussian and a gaussian is very fast-- this has a simple analytical result anyway. A gaussian and a sinc function can take a couple of minutes... and a gaussian and a bessel function takes longer than I can allow! I think I must be missing something here. I've tried various things, interchanging "int" and "Int" for the integration, and also seting digits to something low, by using evalf[4]. Sometimes it just maxes out all available memory before grinding to a halt, in other trials it will allocate about 300 MB and churn for hours. The worksheet is attached. I'd appreciate the advice.

I am trying to ease my c coding work with the "CodeGeneration" tool in maple. The Idea to generate ready to use functions is quite thrilling.
In my attempts to generate code I entontert two problems.
First it seems to be impossible to assign local vectors to vectors passed in the argument list:

> MapX := proc (X\_out::Vector(2), X\_in::Vector(2), PRO2RO::Vector(2))
> local X\_t :: Vector(2,0), i;
> X\_t[1] := PRO2RO[1];
> X\_t[2] := PRO2RO[2]*10;
> X\_out := X\_in + X\_t;
> return;
> end proc;

here the assignment X\_out := X\_in + X\_t; is not recognized.
Hello everyone, I am trying to create a procedure to translate a matrix into a nested list. (in Maple 10) I actually want to transform the matrix A[i,j] whose indexes are in the interval i,j=1,2,... d^k in a list: L[n1,n2,...,n2k] whose indexes are in the intarval n1,n2,...n2k = 0,1,2...,d. For instance, a transformation of indexes could be: for i from 0 to d do for j from 0 to d do for k from 0 to d do for l from 0 to d do L[i, j, k, l] := DM*([1+(sum(d^(i-1)*n[i], i = 1 .. k)), 1+(sum(d^(i-1-k)*n[i], i = k .. 2*k))]) od: od: od: od: But I would actually like to indtroduce k and d as parameters of the procedure. My problem is then how to say:
Hi All, I'm wondering if anyone can advise me on ways to perform 3D trapezoidal interpolation in Maple. Using 40 experimental data points View 2213_090606_PleaseHelp.mw on MapleNET or Download 2213_090606_PleaseHelp.mw, my goal is to generate a figure like the one on the right here: That figure was generated manually by a colleague of mine (he drew in the triangles himself), but I'm wondering if Maple can do something like this. Thank you very much for your time!
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