MaplePrimes Questions

Good day! Some of my tasks are quite time consuming. What maple command I have to use in order to get some sound signal when calculation is over?

I am trying to set up a procedure for creating a matrix of user specified size.  Basically, I want the user to be able to specify the size and the values of the internal parameters and maple will generate the matrix.  The matrix has the form:

[e   h1   0   0   ...    0]

[h1  e    h   0   ...    0]

[0    h    e   h   ...    0]

...

I have a module which is an argument to a procedure.

When I "trace" this procedure, the entire module is  printed (as it should).

Is there a way to NOT print the contents of the passed module? It is annoying when debugging.

 

Paul 

Hi

I've got a list of inequalities

[x > 5, 10 < x]

and I need to plot the region by

plots[inequal]( [x > 5, 10 < x], x = 4 .. 11, y = 0 .. 1);

but I don't want to specify x-range.

So how can I get the numbers from inequalities and generate something like "x = 5-1 .. 10+1"?

 

Thx :)

I realize that Maple itself does everything but I would like a simpler cheaper solution for a number of computers in my classroom.  Multiple licenses of Maple is not an option. 

maplematrix.mw

Hi all,

I am stuck again in a simple problem of creating a M*1 Matrix.  I have attached a Maple file for your kind consideration.

I shall be looking forward to your reply.

Best Regards

A.Q

 

Hi,

> assume(y::prime)

> about(y);
Originally y, renamed y~:
  is assumed to be: prime

I don't understand this answer:

> is(sqrt(y)>0)

      FAIL

Just to clarify, so if an issue is brought up here in mapleprimes there is a possibility that it will go un-noticed by maplesoft?

I realize some issues brought up by people are sometimes solved within, but there is an occassional request for input from maplesoft on these forums that go un-answered.  Just recently a question only maplesoft could answer here and there has been no reply http://www.mapleprimes.com/posts/123111-Maple-1501

I am going to guess...

I want to solve a set of ODE equations numerically,there is 5 equations with certain boundary conditions,please help me,what kind of dsolve order could i use? when i use dsolve({sys,bcs}type=numeric) i get an error that say me:system must be entered as a set of equations! how can i solve it?

Hello everyone

I'm trying to do a fit for some points using a model function. However, I don't want to use the full range of the independent variable in the model function because I know there will be no fit then. How to assign a range for the fitting variable?

In the case my writing is not clear, here is what I mean:

xdata:=points

ydata:=points

modelfunction:=f(x,parameters)

Fit(f(x,parameters),xdata,ydata,x,rangeofx=r);
I...

Interesting behavior!!

> restart
> N := 150; L := LinearAlgebra[RandomVector](N);

                              150

> st := time(); for j to 10^4 do ArrayTools[SearchArray](`~`[`=`](L, max(L))) end do; time()-st;

             ...

Hi, i wrote my script file some time ago, and found that I wrote `:=` in one of the equations. when I remove the ``, just let it be :=, it does not work and is spending a long time to evaluate. May I know what does `:=` means please?

Thanks.

Hi everyone, 

In my research project, I needed to evaluate a multi-variable integration. I'm trying to do this in Maple, and seems no matter I use Int or int, it failed to evaluate the integration. 

Here's my code:

I'm integrating a joint probability density function which is basically a multiplication of four PDFs of four Gaussian distributions:

 
> mu := 0:                                                    ...

 

I have problems with the time delay the procedure for computing the Hough transform of the image that Annex. Delay 5534.875 seconds. How to improve, optimize the procedure, to be more efficient at runtime?

Hough.mw 

Hi,

I have a system consisting of a multi-body system and various modelica/maple custom components. The problem is whenever I re-run the simulation even though all the simulation settings are same, the simulation results are inconsistent. There should be no difference between each simulation as all the parameters/settings are same. I am attaching two pictures which are both obtained from two successive simulations

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