MaplePrimes - Questions and Posts tagged with problems

Maple 13/16 Freezes in Do loop

onujosh — Wed, 06 Feb 2013 14:05:00 Z

Hello,

I work at a University and we use Maple 9.5, 13, and 16. We have had problems with 13 and 16. In this instance the program gets stuck at

for k from -N to N do
  e[k]:=g[k]/L2norm(g[k])
end do;

We left it run for 24 hours but it will not calculate e7. The program doesn't freeze but just seems to be in an endless loop. I have tried on multiple computers with different RAM/CPU configurations.

In Maple 9.5 this program...

Regression Problems

Ratch — Thu, 31 Jan 2013 15:23:18 Z

Cursor Problems in 16.02

TomM — Tue, 25 Dec 2012 08:03:26 Z

I just updated to 16.02, and now the (writing) cursor has horrible problems, especially in text groups. Basically, it is erratic or unmoveable.

In a text group, if I move a cursor down by pressing <enter>, it will not move up with the arrow keys, or it disappears and then appears in previous groups. or a new cursor appears in the line above, but the old cursor remains, or ...

In an execution group, it does a lot of the same things, but not quite as erratic.

Recursive assignment problem with matrices

Epic-o — Tue, 11 Dec 2012 21:32:14 Z

Hi,

I'm having some problems with the generation of the typical stiffness matrices seen in FEA formulations. I have got an elementary matrix that is looped through the entire stiffness matrix to generate it. As there is juxtaposition between the elementary matrices, there is some recursive assignment involved that I can't handle properly. Here is the code for a 6x6 elementary matrix with a 3x3 juxtaposition. n is the nombre of recursions needed to fill the stiffness matrix. M is the elementary matrix

Problem with implicitdiff

jft — Sun, 07 Oct 2012 13:00:14 Z

Hey all,

Just started using maple for one of my university courses and am having some problems trying to implicity differentiate a question in one of the problem sheets I have to do.

I am trying to find y' for cos(exp(xy)) = x and the command:

implicitdiff(x = cos(e^xy), y, x)

results in a FAIL. Am I doing something wrong?

Thanks!

different answeres for a unit code !!!

farazhedayati — Tue, 15 May 2012 09:42:16 Z

hey

I have wired problems with maple !!!

I run a code twice, I get 2 different answers !!!

I have uploaded the code ! just run it twicw and see the numerical values of alpha and beta at the end ! new_idea_gf.mw

Physics: Bead on a rotating hoop

koonduck — Thu, 10 May 2012 05:00:34 Z

Hello,

I am working on a physics problem that involves a bead on roating hoop. You need to use Lagrangians to solve this problem but this is not where i am strugling. My school expects us to use maple because it is the program the provide but none of the teachers know how to usem it (they use mathmatica) so they cant help us. We have the equation: θ"= [ω²*cos(θ)-(g/R)]sin(θ) and the initial cond. θ'(0)=0 and θ(0)=θ

input loop data into a matrix

povault — Thu, 29 Mar 2012 16:49:42 Z

First of, thank you commenters, you have helped me so much in the past!

I am doing a matrix inversion with random numbers and I would like to loop the process, and have each inverstion go into a matrix, such that the matrix will be a bunch of rows ( i number of rows) and three columns (the matrix inversion yeieds three values)

> for i to 2 do;
> 
> a1h := Generate(float(range = 0.1316881e-2 .. 0.1359706e-2)); a1f := Generate(float(range = .317149811 .. .327463626...

create math page exercises to print for my daughter

Christopher2222 — Tue, 27 Mar 2012 14:13:52 Z

I'm creating a table of random math problems for my daughter to print out. How do I get more columns?

a := rand(1 .. 15):
b := ["+", "-", "x", "/"]:

for i to 15 do
print(cat(a(),b[rand(1..nops(b))()],a(),"_____")):
print(``):
end do;

13x4_____

There was problems during the loading process

Ali Nouri — Mon, 09 Jan 2012 17:28:20 Z

Hello my brothers and sisters..

Well, i have to say im really lost .. i have tried a lot but cant figure this out.. i cant open my math task and it only says "there was problems during the loading process" please help me guys i need this i have spent hours on this. and by the way its maple 15 on a mac.. thank you guys..

Configuring a Matlab-Maple Link in Version 13

roberto — Tue, 11 Oct 2011 15:04:38 Z

I cannot set up a link between the student version of Maple 13 and Matlab.

I have followed the instrutions in ?Matlab,setup and things still do not work. I have even done everything manually. On the prompt I have done many variations on the following:

$ export PATH=$PATH:/Library/Frameworks/Maple.framework/Versions/13/bin

problem in linux

Jorgenecochea — Tue, 31 May 2011 21:22:52 Z

Good afternoon

I have just installed Maple on Linux - Ubuntu, but i have problems.

Please help me. how can i do

how to define a correct Commutator relations with Setup

lxyuzs — Wed, 06 Apr 2011 03:57:18 Z

Hi, friends

The physics package was provided a good tool to compute Commutator or anticommutator relations. Here, I met some problems.

Example 1:

restart: with(Physics):Setup(mathematicanotaion=true):

Setup (op={p[x],p[y]},p[z]):

alg:=%commutator(p[z],p[x])=2p[x], %commutator(p[z],p[y])=-2p[y], %commutator(p[x],p[y])= p[z]

Solving ODE system

Macrohard — Wed, 30 Mar 2011 08:58:53 Z

Hello!

I'm trying to solve numerically an ODE system with piecewise. And this piecewise is very important for this task.

This system describes behavior of a pulley with friction. There are some constants: m, c, g, mu and J. Values of this constants are not important.

> sys := m*a(t) = piecewise(a(t) < a0, F0*time, a(t) >= a0, 0), v(t) = diff(x(t), t), a(t) = diff(v(t), t);
> m := 5; F0 := 10; a0 := 5;
> initialconditions := x(0) = 0, v(0) = 0;

How to fill some curves and rotate them automatically?

Wang Gaoteng — Mon, 21 Mar 2011 15:53:37 Z

TaiChi.mw

Hello,

The appendant is a figure I generated in a leisure time a fews days ago. There exist 3 problems, I feel they are a challenge to me. The third problem is:How to rotate the figure automatically? Like this. Can you give me some advices? Thank you very much! Best Regards!