Hello people in mapleprimes,

I have a question:
What are you doing when you use maple in calculating, for example, your paper,
to avoid missing, for example, variables you use, or for your needs to look back the outcomes you obtained before?
If this is a paper-using work, on considering what to do next, you will read some pieces of papers you wrote and
on which you had calculated and obtained necessary equations. But, with small monitor 13 inch, and with
inconvenience of dealing with things in PC, compared with papers, I feel some stress in using maple in writing a paper.
So, now, I am asking you what kind of methods you has devised to make what you are writing compact and easy,
for you to handle with what you are writing.

I know surely that there are the document block, which enables output or input to not be shown, the workbook,
which is helpful in putting attached worksheets or jpg files together at one workbook, and the distinction of ":" and ";",
which in the case of the former, hides expressions in the outcome.

But, yet, I want to ask you about the ways you use to make it easy to write something.
If you have some, I will be very glad if you show it here.

Best wishes.

taro

I would like compute the vertices of the convex hull of finitely many points in some \mathbb{R}^{n}, where the coordinates of these points could be rational numbers or irrational numbers like \sqrt{2}.

I know that PolyhedralSets[ConvexHull] is a direct command, however it does not support irrational numbers. But if I transform all coordinates into floating point numbers, for some rational numbers the rounding error would be large enough to affect the result. For example, after the transform some collinear points are no longer collinear.

Thanks!

Dear All

I need to reduce system of differential equation system into triangular system which I came to know can be done using Maple package "DifferentialAlgebra", but I do not know how to use this package for triangularization.

The differential system is DetSys derived from  some PDE:

Download [1117]_Symmetries_determination.mw

Regards

USB and or RS232 porting from inside maple console. Title explains what i need, or how to port an externally built java app into the maple console, either which will engine my dispatch tonight

Hello everybody!
I have a PDE with initial and boundary conditions. I want to plot its solution by taking "t" as x axis. I have seen the documentation. It only has the space variable on x axis. Please show me a way to achieve what I intend.

here is the file pdsolve.mw

The value of x can be chosen as 0.16 or 0.21

I wish to define a function which is the derivative of another function.

> f:=(x)->x^2:

> g:=(x)->diff(f(x),x):

> g(x);

2 x

> f(2);

4

> g(2);
Error, (in g) invalid input: diff received 2, which is not valid for its 2nd argument

I cannot find a way in which I can define the function g, using the functional operator, so that I can actually evaluate g(x).

How can I do this?

i think i might have asked this before for another thing if so im sorry but anyway i think its @ or something, i would like to plot the final output here indexed against th

Download mapleprimes90916.mw

e number of iterations of Y conducted besides the original performed on the empty set

I am trying to solve a PDE using pdsolve-numeric. I am getting an error related to boundary conditions.
Please see the follwing worksheet and suggest me some solutions

pdsolve.mw

hi every one, i want to get derivative with sacalar function psi, first time ordinary derivative and second time covariant derivative , how should i write that ?!

I would like to use the angle symbol to represent polar numbers (phasor notation for electrical engineering. In other words, I would like to enter 10<30 instead of polar(10, pi/6). Also, I would like the results displayed with the angle notation.  Is this possible in Maple. In the "other package" by PTC this is trivial. Even on a TI graphing calucator it is trivial. Someone please tell me it is possible in Maple.

For computation, Maple is great. For presentation, there is a lot to be desired. 

Thanks.

While debugging something unrelated to Maple, I noticed in Windows task manager that the process

C:\Program Files\Maple 2016\jre\bin

had a Memory(Private Working Set) of 2,251,088K - roughly 10x the memory footprint of any other running process.

Is this normal?

Not a real issue for me (machine has 16G ram) - but it just *looks* wrong

In case it matters I'm running Maple 2016.1 on Win7, 64bit

I try to define an ellipse using the geometry package

with(geometry):

ellipse(e1,['foci'=[[0,1],[4,1]], 'MajorAxis' = 8],[x,y]);

I get the message:  Error, (in geometry:-ellipse) wrong type of arguments

but the documentation tells me that I can define an ellipse this way...

Hey MaplePrimes

I have been having a problem with almost all of my documents in maple. I have had a lot of notes and everything for my school on different documents, but I can't open them. When I want to open them, they show a little with "How do you want to open this file?" with the options "Maple Text, Plain Text, Maple Inputs" and I have tried them all, but my document won't show. It's really unfortunate because all of my school stuff is on these documents.

I am not sure why p is assigned to 1 when I do a logic problem.

The letter p should stay as p and not be assigned to one. I suspect it has something to do with a statement that is always true. This is annoying because sometimes I have expressions with p in a formula later on, and I didn't realize p has been assigned to 1. And I can't use p in a logical formula either since it's already been assigned to 1.

Hi folks,

I've come across this project which involves large algebraic expressions and I need to be able to simplify it using Maples in-built features, but with no succes.

The problem involves trig-functions. For instance I have several expressions involving:

       cos(v)*sin(w)-cos(w)*sin(v)       which I know equals     -sin(v-w)

but even if I use simplify, trig, size and so on it won't apply the above identity. Btw there are several other identities that aren't applied either.

Is there any way to "force" the above identity into consideration??