## Help in code usinf lists...

I have two lists viz. X:=[a,b,c,d,e,f,g,h,i] of size 9. And I:=[1,2,3]. I want to generate a list of all the possible patterns of size 9 which can be made using 1,2,3. For example a few patterens which the code is to produce, among many others, are as follows: [1,1,1,2,2,2,3,3,3] [1,2,2,1,2,2,1,2,2] [2,3,3,2,3,3,2,3,3] [2,2,2,2,3,3,3,3,3] etc. Your help would be a great great help to me. I need it direly.

## Functions involving Vector and Matrix entries...

Hello,

Here is my problem:

> vec1:=Vector(2): plot(vec1[floor(x)], x = 1 .. 2);

The above should give the zero plot, but it gives the error message.

Of course, vec1[floor(x)] gives the correct answer for any specific x. (i.e. vec1[floor(1.5324)] gives 0, which is correct).

I get the same problem when plotting or integrating functions that simliarly depend on Matrices. What's going on?

Sincerely,

## How to extract functions of specific variable...

I'm looking for a method to extract the (unique) functions of a specific variable from a sum of functions, for example from u=sin(x)*sin(th)+sin(x)^2+sin(2x)+sin(th)^2+exp(x)+x i want to extract for x unique functions = {sin(x),sin(2x),exp(x),x} and for th unique functions = {sin(th)}. For a sum of only trigiometric functions, I use indets(u,trig(x)) and indets(u,trig(th)). However, for a sum of general functions I have no clue how to do this. Any help is welcome. Niels.

## Erro: Conection to Kernel lost...

I had installed Maple 9.0 for linux (SUSE 10.0). When I start it, I see an error message "Connection to Kernel lost". Have someone any advice? Thanks Angela

## Kronecker/Tensor Products...

Hi, How do I calculate Kronecker/tensor products in Maple 10? Regards, Evyn

## Document Block Output Suppression Problem...

I am attempting to use document blocks to hide the Maple code for an interactive document and I'm encountering an unbelievably frustrating issue: if I create a new document block and suppress the output of the function calls therein with a colon, when I collapse the document block, the function calls are not hidden at all, but are displayed in a continuous line. If I do not supress the output, once I collapse the block, only the output is visible (which may be desirable except that I am doing things like loading packages, storing plot3d and plot variables, etc., and I DO NOT WANT THE OUTPUT VISIBLE).

## Define function with matrix perhaps?...

I'd like to define a function f(a,b)= product(product(p(a,b,c[i],d[j])^x[ij]*(1-p(a,b,c[i],d[j]))^(1-x[ij]),j=1..n),i=1..n) (The x's are known data, each 0 or 1, the c's and d's are also known.) Is there a way to do this without writing it out long-hand, say using a matrix of the x's and vectors of the c's and d's? Thanks.

## Indexing piecewise functions?...

I have an array of functions involving x such that array[i] is valid only on the interval x=i..(i+1). I am trying to create a piecewise function that includes all array[i] terms valid in their respective ranges, but I am running into some syntax problems.

## I can't integrate this...

Hi! I am new! I can't integrate this... could u help me? (exp(-1/2*(ln(y)-(x*b+2))^2/(sigma^2*(x^2+1)))/(y*sigma*sqrt(2*Pi*(x^2+1))))*(2-1.666666667*x), x=0.6..1.2, y=3.6..4.5

## how to solve a system of equations and inequalitie...

Can any one of you help me to solve the question below? Please... Question: Find non-negative integers solutions that satisfy the following conditions: Given: p,k,h,a,b,c are integers. The conditions are: (1) a+b+c=k*h-h-h*h+1 (2) (p-k+h)*(p-h-1)*(p-1)-(p-k)*(p-2)*(p)=a*(p-1)+b*(p-h-1)+c*(p-k+h) (3) h>=1 (4) h

## Classic Worksheet Mouse sensitivity problems...

Hello All!
When using Maple 10 Classic Worksheet, the mouse sensitivity goes up tremendously, making it really annoying to work with. The sensitivity is only increased in the Maple window when it's activated. I only have this problem with Classic Worksheet, but it's the 'version' I use. Is there any workaround for this? Like some sort of registry fix?
I'm using a Logitech Mx500, by the way.
Any help is really appreciated!
Cheers

## Memory and evaluate...

Hi, I have a very problematic question. I have a Matrix (100 x 100) that contains complex numbers express as symbols. The numbers derive from several operations. I want evaluate the Real part of the complex numbers for successive calculus but the software show a memory problem. How can I do? I have a P4 with 2GB of memory. I use the function: map(Re,matrix); Thanks

## Exporting figures as Encapsulated PostScript files...

Hello, I'm trying to make a wrapper procedure that will launch an external program with some dynamic arguments. To do this I created a proc and used the launch command from the process package. My procedure seems to be syntactically correct, but when I run it all it does is echo the procedure code. Since nothing was working I have created a simplified procedure that simply tries to launch Notepad. Instead of launching notepad it just echos out the source of the procedure: My definition of the procedure RunNotepad: ``` > RunNotepad() := proc() > use process in > launch("notepad.exe"); ```