To Maplet Experts:
There is dearth of work  on ComboBox, a maplet element.  How does one access an item in a ComboBox.  How does one know which item in the itemlist is selected.  How does one pass selected item as an argument in a function,
I will appreciate any respond to these questions. 
Pat Velez
 

consider the system

2x1 + x2     = 1

 x1 + 4x2 + x3 = -1

           x2 + 2x3=3

Find x using the Jacobi iterative scheme with x= (0,0,0)

Hi

I'm currently trying to write a matrix question. My problem is that the answer can take to forms. I can use a maple graded question to exect both answers but am having trouble when it comes to using a 'matrix; type question. It there a way to get the matrix question to accep the both answers or has it got to be done with a maple graded question.

Regards

Jim  

ps below is the text file it needs to saved and then uploaded.

 

qu.env.validTest=

false

Dear all,

I would like to solve the following equation (linearized Poisson-Boltzmann in 2D) in Maple:

diff(u(x,y),x,x)+diff(u(x,y),y,y)-k^2*u(x,y)=0;

subject to the boundary condition:

u(x,a*cos(bx))=0 and  u(x,y)|y->infinity=0

(a,b and k are parameters)

I succeed to get the solution with pdsolve, my problem is how to solve the boundary condition problem.

Thanks!

 

A link to a Maple10 worksheet is attached below.  The worksheet has the command lines but has not been executed so it size came under the limit for uploading.  The worksheet is an effort to animate the radius vector to a spacecurve complete with the tangent vector and associated normal and binormal vectors.  Early in the worksheet we suceed in animating the radius vector and the spacecurve.  This success was achieved with some pain.  For instance errors with the plot structures na ddisplay command would not work unless the whole sheet was executed - if, after this,

The code generates lines parallel to the opposite side of a given triangle. How can I control the animation to stop at x=10 or not to go outside the triangle.

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hi let's look for the intersection of 2 functions the first one f1 := unapply(CurveFitting[Spline]([[1.55, 1], [1.6, 0], [1.65, 0], [1.7, 0], [1.75, 0], [1.80, 0], [1.85, 0], [1.9, 0], [1.95, 0]], x, degree = 1), x); the second one r := unapply(CurveFitting[Spline]([[1.55, 0], [1.6, 1], [1.65, 1], [1.7, 1], [1.75, 0], [1.80, 0], [1.85, 0], [1.9, 0], [1.95, 0]], x, degree = 1), x); when we plot the 2 functions : plot({f1(x), r(x)}, x = 1 .. 1.95, y = 0 .. 1, thickness = 3); we see that there is 2 intersections that are 1.575000000, RealRange(1.750000000, infinity) but maple gives 1.575000000, 1.550000000, RealRange(1.750000000, infinity)

I have conmpleted a maplet application. It takes 45 seconds to initiate the application. I understand to speed up my application is to convert it into a module. Can someone show me how to convert my applicatioh into module. Consider the application: with(Maplets[Elements]):Hello:=Maplet(["Hello World!", Button("OK", Shutdown())]): Maplets[Display](Hello): thanks in advance. Pat

Hi guys, i wrote this fairly simply routine, to basically generate n equations, generate relations between those equations, then attempt to solve them by comparing coeffients, upon which i group together the information about the coefficients, for example i could have the equation ax+by=4x, so from that x=4,b=0 The equations in question are Dx=[x,Dy]+[Dx,y], when D is a map which maps x and y to A, where x and y span A's basis. so Dx and Dy would be a linear combination of x and y. This would be for the 2 dimensional case, for the n dimensional case x and y would extend to n variables.

I am looking for some lecture notes covering 'the' 'elementary' properties of the Laplace transform, preferable (but not already written) using Maple for the proofs. What I would like to see is L(f, s) = Int(f(t)*exp(-t*s),t = 0 .. infinity) where s may be _complex_ and is not assumed to be real.

Hi, I noticed that in the lastest version of TexMacs 1.0.6.5 that maple is supported. I downloaded it. It appears to run OK, but I can't get the maple mode to load. It shows up in the session selection. I would appreciate any help or pointers. My system: Win XP fully updated and patch, Maple 10 or Maple 7 or Maple V.5. Thanks Ralph Wallace K9RWW@ARRL.NET

Show that the substitution x -> (1-x)/2