I'm trying to numerically evaluate an integral using the evalf function, but I keep ending up with just the value "Float(Undefined)".
After manipulating the expression in different ways I also get other error messages stating that something or value is too large.
Can someone please help with this ?
(worksheet attached in this message)
Download 285_casimirEENG501HW5.mwsView file details
April 27 2010
Currently I am using worksheets. Please help me how to Create and read .mpl files in Maple. Can I use worksheet for this? On using read command in worksheet to access a " .mpl" file it shows "Error, on line 1, syntax error, character `?` unexpected:" Please help me on this.
Our university (Univ. Sao Paulo - Brazil) has license for maple 9 (not sure which release).. It can be also that the version they have is Maple 6 since there is a xmaple6 in the files (see bellow)
I use in my machine Ubuntu linux, the newest version.
Althoug it says it has linux support for maple, nobody was able to install it from the instructions provided from above to us, users. I will describe the situation:
we get from the university a tar file containing the files
root@edf:/etc/Maple/bin.IBM_INTEL_LINUX_REDHAT# ls -1
So I went ahead with alec's timer code and expanded on that, his window approach was also the approach I would need to furthar push the project to completion, so the beginning is pretty much his code, and works plenty fine.
Now I was working on the project and then realized in order to set things up the way I want, i'm going to have to make a grid layout, also suggested by a fine coder here in a previous help topic, now my problem is, I had to rehaul ALL of my code to use grid layout, grid layout seems like a really easy to use system, and I started converting all the code to comply with that, and in the huge mess of brackets and square brackets, I seem to have messed up the overall opening and closing of said brackets.
The other day I was doing some not so light recreational reading. On page 83 of GAMMA Julian Havil
discusses the Bernoulli numbers. Evidently there exists a set of numbers B(0), B(1), ... such that
sum(k^pwr,k=1..n) = (1/(pwr+1)) * sum((n^i) * B(pwr+1-i)* binomial(pwr+1,pwr+1 - i),i=1..pwr+1)
Havil listed the first 12 Bernoulli numbers B0, B1, ..... = 1 1/2 1/6 0 -1/30 0 1/42 0 -1/30 0 5/66 0, ...
He also stated that the Bernoulli numbers were part of the coefficients of the expansion of x / [ (exp(x) -1)]
My goal is to have users question banks in text files, and then read the data (both text and Maple procedures) in, through the readline function. The problem is, when I use that function, they come out as strings. For instance, if the first line of my file default.txt is
then the command readline("default.txt"); will display
I've tried using the convert function, but I can't find a type that will change it to a procedure. convert(aString,symbol) puts it as a symbol, but when I assign a variable to that symbol all it does it spit the symbol back out, it doesn't execute it. And if I use type(aString,procedure), it makes a procedure which displays the string. I need to remove the double quotes somehow and turn what's inside into a full-fledged Maple procedure. Any ideas?
Occasionally Maple does not make me happy, if I want numerical
integrals with more than the 14 digits which are supplied through
the NAG libraries - that may be rather slow.
So I wrote my own solution using LCC-WIN32 (a (free) compiler system
allowing 104 decimal points of precision), where I coded the double
exponential integration method. That gives me what I want to have in
Details are sketched in the uploaded zip-file (it contains all what
is needed to run the stuff).
Some draw-back: this is for Windows only and because of OpenMaple
at least Maple 9 is need.
I again have a problem with "Dsolve numeric".
I solve a system of linear ODEs with boundary and continuity conditions.I got an error, which is associated with any internal procedure of Maple. For the sake of simplification, I reduced the order of equation from two fourth-order ODEs to the eight equations of the first order, but the same error is outputed.
Download 2847_problem-1-1.mwsView file details
Please help me clarify it.
I did that for matrix inversion:
Here is some stuff for doing that by calling Maple from Excel. The reason
is that one could care for extreme cases, where a really good precision
is needed. I included an example how to switch to rationals, where the
inversion can even be done exactly (do not use it for dimensions to high
and then it would be better to do it solely in Maple + cut&paste).
Unforunately, I have had to remove the ability for users to upload HTML files to MaplePrimes. We recently had a user upload 630 HTML files that all had links to their Viagra and Cialis ads.
In the 8 months that the File Manager has been available, only one user has uploaded an HTML file, so I doubt that this functionality will be missed. If you need to post HTML to MaplePrimes, you can always just copy and paste its source code into a posting.
If you have any comments on this, please add them below.
So guys, here comes the big and pretty much final questions. I'd like to thank you all ahead of time, for all the help you have given me, truly you have made this project much easier, and have saved me weeks and many hours that I can now use for other subjects.
In any case, this is what the "circuits" page will look like
I have taken alec's advice and have decided that for the other questions all I will do is hide and show elements accordingly, and again thanks to his clock/timer help, I will be able to write the procedures to do these commands.