Good afternoon.

I have a problem.

i want ot add the procedure friccion(x1q1(t), x2q1(t), 1) into the dynamic system equation, because the fricction change with the velocity.

I don´t know how can solve that

Please help me o give some ideas.

thank you

30-03-2011-robot-man.mw

My question is very easy I have  and I want   how could I ask this to maple?

In particular my expression is 

Hello.

I can't find a very "basic" tutorial about data file plotting and I have very simple questions.

Assume that we have a file that contains :

0.5 0.2

0.3 0.9

0.4 0.1

0.7 0.6

The first thing to do is to read data. I have no problems for that :

mydata:=readdata("test.txt",2)

Then

mydata=[[0.5,0.2],[0.3,0.9],[0.4,0.1],[0.7,0.6]]

Question n°1

I draw tiles, i want to utilise un plot of an array 2 dimension. But i have had a good solution ?

I input data by hand :

> with(plottools);
> with(plots);

 > a := proc (i, j) options operator, arrow; polygon([[i, j], [i, j+1], [i+1, j+1], [i+1, j]], color = red) end proc; b := proc (i, j) options operator, arrow; polygon([[i, j], [i, j+1], [i+1, j+1], [i+1, j]], color = green) end proc;

Hi everybody,
i'm an italian student, i'd like to create a Maple Library Archive for Maple 11 (a .mla file) with the procedures i want but i don't know how to. Can anyone explain me?

(I want to create a .mla file with some procedures and then recall the library at the initialization of a new worksheet, so that i can use the procedures i defined)

For example, i would like to create a .mla archive with the 2 following procedures:

I'm trying to plot phase analysis for the Friedmann's equation, however when running the protocol and trying to plot these phase analysis, it comes up with error that rho wasn't allowed in the set of options!

Here's the code i'm having difficulty with!?!

> SFsys := proc (lambda, W, ics, T, v, u) local sys, flatF, rho0line, plot0, plotDSp, plotDSm, plotE, flatF_Plot, IC, df1, df2; 

sys := eval(DSys, {Lambda = lambda, gamma = W}); 

> Hello Guys,

Please help me with this problem.

I generate the solutions to an equation and then I place them in a list as for example

> t1 := [((-4*Pi^2-beta^2+4*beta^2*Q^2*Pi^2+8*I*Pi^2*beta*Q)/(4*Pi^2+beta^2-4*beta^2*Q*Pi+4*beta^2*Q^2*Pi^2))^(1/2), -((-4*Pi^2-beta^2+4*beta^2*Q^2*Pi^2+8*I*Pi^2*beta*Q...

Hi , I'm Alan GHafur , I'm student in master dagree in Statistic in Irbil / Iraq .I want learn how can slove non linear function in Maple.

thank you for hlep me.

In 2D input it is possible to represnet

diff(f,x) as d/dx f

Is it possible to do

diff(f,x,x) as d^2/(dx)^2 f somehow?

Is it possible that we can add or modify new expressions in the palettes?

There are many ways to enter the second derivative in Maple.  Except for some silly reason I am stuck trying to figure out or find out how to enter it in 2d math form. 

d²    f
^---
dx²

Entering it like d^2 (right arrow) f  / (dx^2)  is not the right way to enter it.  What is the right way?

Okay, many questions here, maybe someone can answer one or two of them for me?  Can someone show a few simple multi-thread examples that work starting from version Maple 12 ?  Actually what version does multithreading actually really start working to improve calculation times? 

From what I understand the Threads package was introduced in Maple12 so it's almost experimental there.  An example I found using add() and Add() shows a slight...

Why is this software so unintuitive ?!

It can't even plot a vectorfunction, and when i finally found out (wich took a looong time because there is no help to get out there) i discovered my need for having to plot 2 functions in 1 graph wich is impossible !!

This is a ridiculous piece of software that i wouldn't even use, even if i got money for it !

I have fought to make this work because i had 3 small assignments to do, and thought they would be nice...

Can we assign a process to a portion of threads thereby limiting it's use on the cpu?  Or assign a processs that continually runs on a portion of the cpu while retaining the bulk processing power for other tasks other worksheets in Maple?

Fogive me here if I lack understanding:  As an example set aside say 1000 threads for the cpu and let one process run on one thread in the background essentially using only 0.1% processing power and leave the other 999...

I have two functions,

f(x) and its derivative...

how could i plot them together in a one single graph??? could you please help me???