I've downloaded and installed the new Vista ready version of Maple 11 (11.01) and few things are curious. It installs something called the "Maple 11 Reader Beta". Not sure what this is or what it is intended to do, but if it is a Maple runtime, then that is very interesting. We only have one Vista machine here in my office and the reader doesn't actually run on it so I can't really tell what it does. Which leads to a warning, the reader is failing because of a problem with my previous install of Maple 10. I had installed Maple 10 using the "run in XP compatibility mode" workaround. So before I went to install the new version I tried to uninstall Maple 10. But, I forgot to set the Maple 10 uninstaller to run in compatibility mode before I ran it, and it blew up. So the uninstall of Maple 10 failed part way through.

Please replace this text with the link to your file. The link can be found in the File Manager Hi, I'm having the nastiest time trying to get a plot from with DEplot3d. I suppose it's not really necessary to look at the whole maple file, but just this part: DEplot3d({de, w(t)= diff(z(t),t),D(x)(t)=diff(x(t),t), D(y)(t)=diff(y(t),t)},{x(t),y(t),z(t),w(t)}, t=0..2*Pi,[[w(0)=P,z(0)=0]], scene = [x(t),y(t),z(t)]) I'm trying to plot the solution to a second order diffeq, where x(t), and y(t) are known. Any help would be appreciated...I've been racking my brain for hours on this stuff

For double-precision ("hardware") real and complex floating-point operations on Matrices, Vectors, and Arrays Maple makes use of its external-calling mechanism to get to compiled code. A great deal of such compiled code for array operations requires what are known as Basic Linear Algebra Subprograms (BLAS). The BLAS libraries provide support not only directly for Matrix-Vector arithmetic but also indirectly in other external compiled libraries used by Statistics, ArrayTools, LinearAlgebra[Modular], etc.

Not sure if this is known or not, I couldn't find any reference to it. If you have a Maplet that you serve over the Internet using MapleNet, if the Maplet code has a trailing comment character - # -, then the Maplet won't display. You get the unhelp error message: "Exception is server did not return a correct Maplet Definition. Results were" It's a trivial problem once you find it, but finding it was not trivial. For the MapleNet developers. Take any Maplet, add a new line at the end of the file, put a comment character at the start of the line. The Maplet will not work. You can add the comment char to the .maplet file or to a .mw that is then exported. Happens in MapleNet 10.5 and MapleNet 11.

Just a thought for my day...

In a system which, by default, evaluates the arguments of function calls it is little strange to make a habit of using an unevaluated function call as a data structure.

Passing around such an object may result in unwanted evaluation of the stored data.

Can someone please explaint to me why this isn't working and some possible corrections. Any help would be greatly appreciated! I'm trying to solve 2 equation and 2 unknowns. Below is the code that I have... View 4496_instri.mw on MapleNet or Download 4496_instri.mw
View file details

I find that reading lots of help pages causes eye strain. A way of reducing this that works for me is to change the background color of the help pages from white to yellow. This can be done by setting HelpBGColor=255,255,224 in the ini file. On Windows XP the ini file will be found at C:\Documents and Settings\Joe User\maple9.ini or maple10.ini. For Maple 11, the file can be found at C:\Documents and Settings\Joe User\Local Settings\Application Data\Maple\11\maple.ini

Hello. This is not a question, but an answer. I have just installed Maple 11 under Ubuntu 7.04 Feisty Fawn and I thought I would share my experience. 1) Log in to an account with sudo rights. 2) Insert the Maple 11 cd for Linux. When asked about what to do with it, mount it. 3) Open a terminal and write cd /cdrom sudo sh ./installMapleLinux32 4) Enter your password. 5) For the location of the installation, I entered /usr/local/maple11 instead of the default. 6) After the installation (and the activation) is complete, I created two symbolic links as follows: on the terminal, write

Hello, I would like to use Socket package to get informaction from HTML page on Website. COuld you help me please? I need to get the part of HTML file to use it in my procedure. Thank you very much Vladimir

If one only wants numerical values in double precision for real arguments then Maple is quite slow, even for the quite typical case of index 1 or 0. A way is to use the GNU Scientific Library GSL as external source for this special cases or to compile the needed stuff into a DLL and use that through external calls. However I (once) wanted to have that as Maple code and translated Ooura's solution into Maple (which is not too complicated). The motivation was to have something fast for evaluating integrals over such Bessel functions. Putting the coefficients needed for the numericial approximation into global arrays this makes Maple as fast as GSL (almost, M9.5 did, M11 is somewhat slower for this approach) for this functions, if one uses hardware float evaluations 'evalhf' (=double precision).

how to make maplet which can run some window by using builder maplet..? how its steps.. regard Hari(ary_raper@yahoo.com)

I am using Maple to solve some inequalities where the solution I get is a RealRange or a real constant. And I want to get an union of these values. I wrote a short procedure which does the work. But is there a better way to do this (there must be :-) )? > RealRangeUnion:=proc(L::list) local L2, rel, rel2, eq, sol, x; > assume(x, real); > L2:=map(a->`if`(a::realcons, x = a, x in a), L); > rel:=convert(L2, relation); > rel2:=convert(Or(op(rel)), relation); > eq:=piecewise(rel2,1,0); > sol:=solve(1=eq,x); > RETURN(sol); > end proc: > > L:=[RealRange(Open(-2),-1), RealRange(Open(0),1), RealRange(1/2,2), -3, -2];

Hello everbody,

I will try to explain the problem from my previous blog in more detail:

The Problem I posted is part of an inventory optimization problem. There are n bases(warhouses) for which I wish to determine the stock level in such a way, that I meet a so called target fill rate. The fill rate is the percentage of demands that can be met at the time they are placed. The formula for the fill rate for base n given an Inventory Level S is the following:

tfrbase[n,S] := sum(basepipe[n]^j*evalf(exp(-basepipe[n]))/factorial(j), j = 0 .. S)

The variable basepipe[n] indicates the stock in the pipeline which consists of the average annual demand times the average lead time.

Hello everybody, I want to determine the value for the variable S in 2 cases in the following function so that tfr=.85 is reached for both cases. First I tried to do this by solving the equation setting it equal to .85 which unfortunately did not work and then I tried to increase S successively until the minimum .85 would be reached. However, non of my attempts worked out as you can see below. I would be more than grateful if you could help me to solve this problem. Target Fill Rate for all Bases >tfr := 0.85 Average Base Pipeline for Minimum Lead Time >basepipemin[1] := 0.2; basepipemin[2] := 1.8;

here the second Approach, which did not fit on the other blog anymore:

for n to 2 do
for S to 10 while tfrbase <= tfr do
tfrbase := sum(basepipemin[n]^j*evalf(exp(-basepipemin[n]))/factorial(j), j = 0 .. S)
od od;

thx for every help...