Hi everyone,

I need to assign the output of the timer block to a variable which is then will be used in a trapeziod signal to add a time offset. Please see the visual below.

Thanks for your time,

Canberk

If you have a list that is too large the list will go off the screen without a way of scrolling.

Is there a way around that?

Here's some test code

with(Maplets):
with(Elements):
maplet := Maplet([["Pick a color:  ", ListBox['LB1'](sort(["blue", "red", "wheat", "yellow", "brown", "gold", "plum", "orange", "pink", "khaki", "magenta", "maroon", "white", "green", "aquamarine", "black", "gray", "navy", "coral", "cyan", "sienna", "tan", "turquoise", "violet", seq(i, i = "a" .. "z")], lexorder))], [Button("OK", Shutdown(['LB1'])), Button("Cancel", Shutdown())]]):
result := Maplets[Display](maplet);

The Maplets, Elements, ListBox (ListBox) example given on the help page doesn't work.  I use the button to transfer the page to a worksheet window but then when I execute them I get an error.  Below is the example given on the help page.  And following that is the errors given after execution.

How do I simulate the follow stochastic differential equations. Thanks very much!

dx=x*(5-2*x-3*y-z)dt+5x*dB1(t);

dy=y*(4-*x-5*y-2z)dt+4y*dB2(t);

dz=z*(2-5*x-7*y-2z)dt+2z*dB3(t);

Just came across actually a couple of applications but seem to be missing the mapleHDLS.src library .  Does anyone have it?

required for these digital electronics applications in Maple8
http://www.maplesoft.com/applications/view.aspx?SID=1419&view=html&L=G

http://www.maplesoft.com/applications/view.aspx?SID=1417&view=html&L=F

I don't know if they were just lost or removed.  Google can't find it, so I think unless someone has a copy of it from way back I might be out of luck. 

Does anyone happen to have it?

I am attempting to minimize an objective function that is related to a p-median problem (facility location). Can somebody please tell me how to impose a constraint that comprises 0 or 1? For instance, I wish to assign the condition, x[i,j] = 0 or 1; in other words, x[i,j] = 1 if the point i is assigned to facilty located at point j; 0 otherwise.

Thanks in advance!

i need to find the graph of exp(v(r)) from 0 to 2e6.

i obtained the graph of v(r) by taking log but how to obtained in exp form

graph_of_exp_form_of_u(r).mw 

Hello,

I would like to know if it is possible to create a dll function from a maple function (a procedure) which would be directly usable in a excel sheet.

In other words, similary to the VBA function that it is possible to build in Excel, i would like to create a dll function that i could use in Excel.

If it is possible, can you help me to use a good process?

Thank you for your help and feedback.

I have four matrix equations

P1, P2, P3 are known 4x4 matrix.

A1 A2 A3 A4 are known 1x4 matrix.

x1 x2 x3 x4 are 1x1 known matrix.

U is 4x4 unknown matrix.

These equations are 

(A1^T*U*P1*A1) +( (P2*A1)^T*U*P1*A1) + ( (P3*A1)^T*U*A1) + ( ( P3*A 2)^T*U*P1*A1) + x1 =0;

(A2^T*U*P1*A2) +( (P2*A2)^T*U*P1*A2) + ( (P3*A2)^T*U*A2) + ( ( P3*A2 )^T*U*P1*A2) + x2 =0;

(A3^T*U*P1*A3) +( (P2*A3)^T*U*P1*A3) + ( (P3*A3)^T*U*A3) + ( ( P3*A3 )^T*U*P1*A3) + x3 =0;

(A4^T*U*P1*A4) +( (P2*A4)^T*U*P1*A4) + ( (P3*A4)^T*U*A4) + ( ( P3*A4 )^T*U*P1*A4) + x4 =0;

How can i find 4x4 matrix U by using these above four equations??

Thank you

First Question: How to define nx1 matrix Y:=(y1,y2,...,yn) ? (n is a Natural number while it is ungiven)

Second Question: How to derivative of matrix Y with respect to nx1 matrix X:=(x1,x2,...,xn) ?

My efforts for the first question:  (I know to define 6x1 matrix etc. , but I dont know to define nx1 matrix

restart: Matrix(1..6,1,symbol=y) 

My efforts for the second question:

restart; with(VectorCalculus);
Matrix([x^2, x*y, x*z]);
Jacobian([x^2, x*y, x*z], [x, y, z]);

Can you help me? 

I can't cut and paste from my maple worksheet (because syntax somehow gets changed in the process), so perhaps the following attempt at carefully worded  prose will do (alternately, please someone tell me how to attach screen shots).  Here goes...

I execute

The optimization succeeds and the assignment takes place.  The result is what I'ld like to cut and paste so youall can see...  it looks as follows. 'r:=' (but no quotes)  followed by open square bracket, then a number, then a comma, then another open square bracket, then a vertically arranged list of stuff, then two close brackets.  I presume the vertically arranged stuff in the innermost matching square brackets somehow represents the point in the search space where the minimum takes place, and the minimum is the number that follows the first square bracket and is before the comma.  My goal is to write to disk the the point in the search space where the minimum takes place (I suppose that vector is in some sense r[2]) .  My attempt to write it to disk is

ExportMatrix("maple.txt", r[2], target = auto)

but maple complains

ExportMatrix("maple.txt", r, target = auto);
Error, invalid input: ExportMatrix expects its 2nd argument, M, to be of type {Matrix, list(Matrix)}, but received [293148935266.099426, Vector(28, {(1) = -233674.34818878854, (2) = 12.62636610207248, (3) = 0.3337043409389546e-2, (4) = 0.13303915611938133e-1, (5) = .0, (6) = .2589485687872699, (7) = 0.9341600279762804e-1, (8) = 0.3293862590239189e-1, (9) = 0.12892649003200331e-1, (10) = 0.606528143324688e-1, (11) = 0.17524827222051658e-1, (12) = -0.16059611469561555e-17, (13) = 0.621465506367271e-1, (14) = .29826235341855, (15) = -0.16288776533795546e-17, (16) = 0.15301368661023716e-1, (17) = 0.1529933711903137e-18, (18) = 0.4375115591744606...

How can I write the result of optimization to disk as a plain ascii text file (tsv format)?

Thanks

I'm looking for the Maplets package for Maple 7 that was available on the old mapleprimes.  Does anyone have it?

I did not realize Maple 2016, since Maple 2015 actually, had stopped Windows XP support. 

      Inspired by the theme
http://www.mapleprimes.com/questions/219995-Finding-A-Convinient-Parametrization-Of-Surfaces
Examples in the Mathematica did Alexander Bannikov.
It is equidistant radius 0.1 to the surface

   (x1 ^ 2 + x2 ^ 2-0.4) ^ 2 + (x3 + sin (x1 * x2 + x3)) ^ 4-0.1 = 0;

https://vk.com/doc7819263_439405418?hash=af46d61d8aad95f70b&dl=9f245f5b6b68b47075

and an example of parameterization the same surface

https://vk.com/doc7819263_439432143?hash=36cf31d52c97e2e373&dl=7e4fa17a771dffb331

As I have understood from the words of Alexander Bannikov, parameterization was performed using the functions: RegionFunction, ContourPlot3D, ClippingPlanes.

It turns out that Maple functions inferior?

I've posted  a code for a procedure, but it seems it does not execute with other versions of Maple the way it does with my version (5.4). Here is the link. I am curious to identify within the procedure code the cause of this divergence. Note: in 5.4 the code is preceded with readlib(eliminate).