Unanswered Questions

This page lists MaplePrimes questions that have not yet received an answer

Hi guys,

I modelled a surface, of which I'd like to have a mathematical representation. The following image is what I need to have.


I've written the parameters of both curves that are drawn on it.

I'm supposed to be able to find it, but I think I just didn't do enough pure mathematics in the past year ...

Hope you can help me?


I've used very similar code before, this time different equations, and for some reason getting the subscript selector thing, which Maple Help claims to have never heard of before.  I've been fiddling around with the code, and NOTHING gets rid of error.  PLEASE HELP!!

Is it possible to change the x_axis to an expanded scale for values less than zero, and keep the regular scaling for positive values?  In other words, display the x-axis from  -1 to 0 using all the real estate on the left side of the y-axis, and 0 to 10 on the right side.  Ratch


I want to increase the length of a slider so I can display more values .

How can this be done ?

View 1600_Polar Help.mw on MapleNet or Download 1600_Polar Help.mw
View file details


Please see the attached Maple 12 file. I need help in entering and solving this type of polar coordinates.

Any help will be appreciated greatly



As the title says already:
Is it possible to stop Maple when executing the entire worksheet with !!! ?

I want to check some intermediate output before the rest of the worksheet should be executed.
I searched for help on 'break', "quit', "wait', "pause', 'exit', but can't find a command that does the thing I want.

Any ideas?


MySimpleMaplet := Maplet([["Bienvenido Usuario al Generador de Solidos de Revoluci?n"]]);

This post was generated using the MaplePrimes File Manager

Download 10813_Prueba 1 con graficador.maplet
View file details

I would like to know how I can calculate the minimum of a function that  is the solution of a differential equation in a (time)-efficient way

Parameters:L := 0.5e-2; Zs := (2/3*180)*10^(-6); Za := (4/3*180)*10^(-6); ss := (2/3*14)*10^4; sa := (4/3*14)*10^4; a := 1.35; N1 := 600; N2 := 300;

Solution of the differential equation:


Is it possible to perform a Ztransform with initial conditions in Maple?

I want to calculate the Ztransfrom of following differrence equation.



y(-1) = 1

y(-2) = 2

For now I am using following command.


I suppose that this command uses initial conditions zero.


Thank you in advance,



I'm trying to run the basic example posted in the hepf files at "OpenMaple, Java, Examples".  The procedure to produce a test.class file from the test.java file seems to work fine.  But I get an error message when I try to run the test.class file as per directions.  What I am seeing is

Exception in thread "main" java.lang.NoClassDefFoundError: C:/.../test

then a bunch of stuff and finally

Could not find the main class: C:/.../test. Program will exit.

the cylinder r = a*cos(O) cut out of the sphere of radius a centered at origin. any help. thanks

Hi everyone.

I have an assignment due in my computing class. However, I'm stuck on these 6 questions. Any help would be greatly appreciated. Please show all work, step by step. Unfortunately though, I can't use Maple shortcuts like "sum" to sum the terms in a sequence, so try not to use those.

Thanks in advanced :)

Hi ,everyone.When I entered the following code I got the error massage "Warning, solutions may have been lost." I want to solve x,how can I deal with this problem?Thanks a lot.

 p := 1730;
 r := .15;
mu := .17;
c := 120000;
k := 60000;
sigma := .2;
y := .89;
CI := 500000000;

Hi everybody, Using pdsolove(SyPDE, BIC, numeric), I have to model propagation of two waves , u(x,t) and v(x,t) , in two elastic test rods that are in contact. The problem are boundary conditions at the contact surfaces: values of forces and strain are equal at the first rod right end and at the second rod left end: D[1](u)(l_1,t)=D[1](v)(0,t) and (u)(l_1,t)=(v)(0,t) Maple can't do that. Should I put in code some transitional Maple expression or function for force and strain, like, for force X:=(delta*x)/l, in order to get this: D[1](u)(l_1,t)=X, D[1](v)(l_1,t)=X,
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