Unanswered Questions

This page lists MaplePrimes questions that have not yet received an answer
<p>sys := [diff(v(s, n), n)+diff(u(s, n), s)+diff(xi(s, n), s)+A*n*(diff(c(s), s)) = 0, A1*(diff(xi(s, n), n))+diff(v(s, n), s)-c(s)+A2*v(s, n)+A3*c(s) = 0, diff(u(s, n), s)+2*A2*u(s, n) = A2*(xi(s, n)+A*n*c(s))-A1*(diff(xi(s, n), s))-A2*n*c(s)] The dependent variables are v,u and xi and the boundary conditions are: bc := {u(0, n) = 0, v(s, -1) = 0, v(s, 1)} other things: -1<=n<=1. I tried ans := pdsolve(sys, bc, xi(s, n), u(s, n), v(s, n)) i also tried ans := pdsolve(sys, bc) I keep getting error messages about the dependent variables.

According to my experience so far, maple is stupid in image processing.

Frustrated with its functions.

For example, in plotting functions, only bmp, gif, jpeg is supported

while in image package, only jpeg, tif and bmp are supported.

So we take the intersection, only bmp and jpeg files can be used if i want to use plot and image packages at the same time.

If i want to do image processing on the file generated from the plot, like transparency stuff, it is not achievable!

And it totally doesnot support opacity!!

 

hi all! i am **brand new** with maple 13 as well as trigonometry, which i am using the program for. i have figured out how to plot the unit circle with the command:

>plot( [cos(t), sin(t), t=0..2*Pi] );<

I would like to experiment with the Mastery Dialog option e.g. making a tutorial. Does anyone tried this in practice? And can I download a question bank that uses this option?

 

kind regards,

Harry Garst

Hey,

I am uing cmaple.ext to generate batch of images.

However, i found some of the functions are not the same as i execute from the worksheet from standard maple interface.

 

There are lot of white space around the image...

Is there any way to reduce them?

Good Morning,

Would anybody be kind to help me with the attached Maple worksheet. My goal is to use Maple procedure to generate all the equations and then solve the equations for all the variables. Also, I have attached the PDF file on the paper I'm trying to develope, the equations are on page 8. Please Help.

Regards,

Moses

For solving a 2nd order hyperbolic PDE numerically (pdsolve/numeric), is it possible to choose more restricted and different time/space ranges, rather than what is defined in initial/boundary conditions? (assuming the fact that one defined Cauchy initial conditions for time variable at t[0], and Dirichlet boundary condition for space variable) thanks
I have a collection of polygons in 3D that are in various colours. Some of these polygons overlap. How do I control what colour the overlapping portions are? The overlapping part may take the colour of one of the polygons. Thank you.

dear i have very complex problem may it wil easy for somone, i have 36 equations in maple that i have to use in matlab to simulate and the equations have to take som numercal values in matlab, and it has to generate some numerical values while running in a loop. i have used the with code generation option in maple. and it produce a code for matlab.

I have asked this question in a math forum on the physics forum site and figured it would fit better here:

http://physicsforums.com/showthread.php?p=2288111#post2288111

any and all help would be greatly appreciated!

 

MT

Hi, I have plotted an implicit 3d plot of an extensive equation into maple, but the particular equation represents a treshold, as it is calculated as the difference between two equations. Which means that everything below the graph represents the case were equation one is bigger than equation two and everything above the graph the opposite. Now by changing the parameters held constant before, I would like to make clear what happens to the chance that one equation is bigger than the other. So to come to the point, is it possible to calculate the surface below and above a certain graph?

Hi there,

I am basically using MapleSim to obtain the equations of motion for mechanical systems and copy

pasting them into a separate Maple document and solvng them numerically. I could work with simple pendulum

and a two link manipulator. But in the case of a four bar mechansism since the system is a closed chain the

number of unknowns ended up being more than the number of equations. In this case, the joint reaction forces

came into play as unknowns. I know MapleSim intelligently does index reduction and solves these equations. But

hye.. iam zarith.. i want to ask u whether there are solution to this differentiation of delta f over delta f. please

From format->autoexecute , I wanted to press "clear" but accidentally pressed "clear all" ... now all 200 of my autoexecuted functions (which were very carefully placed and is not easy to remember which ones they were!) have been removed and pressing edit->undo does NOTHING!

I'm so lucky that I save my maple worksheets every time I make big changes (so I have maybe 36 versions of this worksheet!) .... but should maple not be able to "undo" somehting THAT simple!

 

Hello, I've been trying for weeks to solve a system writen in its matrix form like: M*y(t)'' + C*y(t)' + K*y(t) = F(t) My system can have like 300 dof. If I generate all de equations and I use the dsolve/numeric command, it works but not all the time. I think that there is a problem with the Heaviside function that I have in some coefficients of my matrix. I've been reading in forums that it's better to have a first order system to solve complex problems. For that we can create a procedure as explained in the dsolve/numeric/IVP help.
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