MaplePrimes Commons General Technical Discussions

The primary forum for technical discussions.

In the command-line or Classic worksheet interfaces of Maple, after entering

?pointplot

only the help page for Statistics[PointPlot] is shown.

This is strange, since plots[pointplot] gives an exact match for the lower case name entered while Statistics[PointPlot] does not. In Maple 10.06, that same help query showed the plots[pointplot] page.

In the Standard worksheet interface that same command brings up the Statistics[PointPlot] page. But a...

IfI declare a function or expression before any "assume" statement, then the variables used in the expression do not have any trailing tildes "~". When an assume statement comes after this, there is some sense in which the variable name is changed (as indicated by the "about" statement), but there is also some sense in which the variable name is not changed, as it is still possible to use "subs" with the original variable name:

I find the General tab of the Options dialog in Maple 11 has a section for the Mathematical Engine.  The user is given the choice of a new engine for each document or to share one engine among all documents.  I am running a Intel Core 2 Duo so I presume that I should enable SMP support.  But, I don't know what factors to consider when deciding on the use of shared or multiple engines.

Are there specific tradeoffs to consider?  Does the use of a shared engines save memory or increase performance?

I run Maple11 on a Kubuntu Hardy Heron system that uses CUPS printing and printing generally works, even for Gnome apps.

I Googled and found that others had the same problem with Maple11 and there was a reference to this:

http://www.cups.org/articles.php?L433+I0+TFAQ+P1+Q

I followed the advice to make a /etc/cups/client.conf file and add the line ServerName=localhost to that file and to also export the environment variable

CUPS_SERVER=localhost

While I see the marketing broschures I would appreciate infos on a more technical user level
(and I am not so much interested in the Standard interface, I mean the application level).

Is it possible to say more towards that (without looking through massive download videos)?

Some links to illustrative worksheets?

Always missed such for new releases ...

Maple Help (9.5) lists 15 coordinate systems, but provides no information on any of them.  I am of course familiar with the Cartesian and polar systems, so no additional information is required.  But I would like definitions for the other 13, e.g.,  Cassinian.

Allan

I am trying to solve a one-dimensional heat equation problem with a piecewise continuous input of temperatures.  Dr.

The help page for  PDEtools,dsubs  says  "dsubs will substitute the left hand side of each substitution equation until this derivative is eliminated from the target"


Trying a subs like u'=u into the expression u'' gives u -- as it should:

PDEtools:-dsubs(diff(u(x),x) = u(x), diff(u(x),x,x));
                                    u(x)

 

I would like to use Maple to provide an independent check on a finite element model solution (ANSYS) of a thermal transient analysis of a reinforced concrete shell.  The following information is known about the shell:

Just a simple issue,

When I'm typing in an equation with a lot of brackets, maple automatically underlines the bracket set however if you are at the bottom of the screen the underline will not be visible.  This is just more of an annoyance than a problem.

Perhaps in an update maple could scroll the text up half of a space or so from the bottom of the screen?  or be able to at least scroll the data up the screen.

 

 

I'm trying to install Maple 11 in a 64 bit Archlinux system.  The licensing software is only 32 bit, even though Maple itself is 64 bit.  All I needed to do to get around that is install 32 bit glibc libraries (pacman -S lib32-glibc for any Arch users)

How can Maple arrive at the following, for an unspecified function f(x,y), without knowing sufficient conditions (eg. whether the 2nd partials are continuous)?

> # From the ?diff help-page
> diff(f(x,y),x,y) - diff(f(x,y),y,x);
                                      0

Continuity of integrands isn't generally assumed by int (there's a separate optional parameter which enables it...

Hi there,

I'm struggling to understand the dynamics of a 3-D system of differential equations. I am interested in a numerical simulation. A phase diagram would be nice too. I've tried the standard bag of tricks, but remain quite lost.

Hi,

I have a dual processor computer and I am using Maple 8 (because it is much faster than Maple 11) but I noticed that Maple 8 only maxes out one processor and doesn't use both.  I am using (unfortunately) Windows Vista.  I would appreciate any suggestions.

I also have a single 2.3 GHz processor at home with XP so I'll give that a try.

Thanks

Hi.

I think there is a problem with arrays. When i define an array like this:

A := {1,12}
Then it works fine as you can see:
print(A[1])=1
print(A[2])=12

but if i do it like this:
A := {1.1,12}
Then the results is reversed:
print(A[1])=12
print(A[2])=1.1

I'm running Maple 11 and updated to the 02 patch.

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