I would like to read a data file that is located in "My Documents" folder using the open command, but maple cannot find the file. The file name is data1.txt and I think the complete folder name is c:\Documents and Settings\dhalpern\My Documents I have tried INP := fopen("C:\Documents and Settings\dhalpern\My Documents\data1.txt",READ,TEXT); but I get the following error message. Error, (in fopen) file or directory does not exist I have checked that the file and directory DO exist. If I place the data file in c:\ then I don't have any problems but I would prefer to have my files in My Documents.

Hello, A few minutes ago I uploaded of file 'georgeworksheet2.mw'. which contains a question which I have for this forum. I have tried to incorporate this file into my post by clicking on the blue type which says "Upload/Use File or Worksheet" but when I click on this nothing happens. I believe this link is supposed to take me to "http://mapleprimes.com/filemanager", but nothing happens. Perhaps this is a problem with the website which should be looked into. In the mean time, if anyone is able to get to 'georgeworksheet2.mw' and respond to the question I present in the worksheet I would be most grateful.

The question of how to scale the x-axis with intervals of Pi has been raised on a number of occasions. Inspired by a contribution from Will, I produced the procedure and examples shown in the worksheet attached below. Hopefully, Maple users will find it useful. J. Tarr View 724_Pi axes.mw on MapleNet or Download 724_Pi axes.mw
View file details

Does anybody know why Maple's support of PDF is so poor? I posted a forum topic entitled "PDF support" in the past but didn't get any satisfactory answers. Suppose that I want to automatically generate a bunch of PDF files in Maple and manually saving each one as PDF isn't an option because it is too time consuming? Am I the only Maple user who has ever encountered this option? A search of the web seems to indicate that this is the case. I want to use Maple over Mathematica, but this is one issue that has prevented me from making the switch (permanently) so far. I am currently running Maple 10.04 for Mac on OS 10.4.8 on a G4.

restart:with(LinearAlgebra): L:=407: > L2:=convert(L,binary): > N:=length(L2): > T:=2^N-L: > TB:=convert(T,binary): > k:=length(TB): > T2:=convert(T,base,2): > T2V:=Vector[row]([T2,0$(N-k)]): > T2VC:=Vector[row]([1$N]): > T2V1:=VectorScalarMultiply(T2V,-1): > T2VA1:=VectorAdd(T2VC,T2V1): > ADDT:=Vector[row]([1,T2VA1]): > B_N:=Array(Hessenberg[lower],1..N+1,1..N+1,(a,b)->1): > C:=convert(B_N, Matrix): > Permanent(C): > delB:=DeleteRow(C,N+1..N+1): > B(L):=Matrix(N+1,N+1,[[delB],[ADDT]]): > Permanent(B(L));

Hi all, I am Using Maple 10. i am getting a frequent bug When i plot a 3d graph. Description: In a 3d plot, if i rightclick after rotating the graph, maple exits automatically. can somebody please tell me what's the problem? Thank you Divahar.J Indian Institute of Science, Bangalore, India.

I've been struggling with the integral 1/(1+x^2)^2 ... i managed to use the substitution x=sinh(x) to get it into the form 1/cosh x but now im stuck! im not sure if the initial substitution was even right ... any help much appreciated! ps i know this is not strictly a 'how to' maple qu ut i thought youd all be the type of people that could help me!

View 2483_func graph 0928.mw on MapleNet or Download 2483_func graph 0928.mw
View file details What's the correct Maple command to graph of the product of f(x) and g(x) ? How to graph conic sections in Maple? Lastly, How to evaluate and graph f(x) compose with g(x)?

As an engineer I typically do a lot of work with matrices and oftentimes symbolic matrices. I might generate a symbolic matrix and perform some computations that creates a function of the symbolic elements of the matrix. I now want to turn those symbolic expressions into a procedure that is a function of the matrix array input. How can this be done? There does not appear to be any simple solution. This task is so obvious and so common that I'm shocked there is no simple answer. Here is a trivial example The symbolic matrix with( LinearAlgebra) : U := Matrix(2,2, symbol=u) ;

I do not understand how to use this command (on strings), I want to convert
outputs from PARI like below - any hints for me doing that?

"5.2185454343674342011212095337 E444" ->
 5.2185454343674342011212095337E444
"0.E-66*I" -> 
 0.I

"0.14237172979226366716527232070 +
 3.1415926535897932384626433833*I" 
which would work with 'parse', but not if exponential notation is involved.

Hello, I wonder if someone could help me understand the best way to insert images into a MAPLE worksheet. I am using TURBOCAD to create diagrams. When I was using MATHCAD I could select any area of the TURBOCAD worksheet, copy it, go into a MATHCAD worksheet and paste. While this proceedure has some problems, in general I could work around them and it worked pretty well. I have tried the same thing in MAPLE and it doesn't work very well, as indicated by the worksheet I have uploaded with this post, 'GeorgeWorksheet1'. What seems to be happening is that I get an extremely low-res copy which is useless. So I tried another approach. TURBOCAD has the ability to save a JPEG image of a worksheet, so I saved my TURBOCAD worksheet as 'F1.jpg' (which I have also uploaded). I then insert this file into a MAPLE worksheet using the using the Insert/Image command. This is the second image in my MAPLE uploaded worksheet, 'GeorgeWorksheet1'.This works better, but the image takes up alot of space on the MAPLE worksheet. The problem is, when I try to contract this image by clicking on it and grabbing the little thingies on the side of the frame and moving them, I am able to decrease the size of the image but in doing so I loose so much resolution as to make the image useless.

I have the polynomial 4*x(x^5+1)(7*x^2-6)(x^3+2*x^2+9)-7 and I need to find the coefficient of x^7. How can I do this? I've tried several different commands but none of them worked. Thanks.

how do I inverse my axes on my plot ? I have been looking in the ple help but I can't find anything. plot({d(p), s(p)}, p = 0 .. 50) how canI put (p) on the retical axe? thanks Jp

convert(407,binary); 101100111 I want the vector [1,0,1,1,0,0,1,1,1]. I don,t make this. Please help me!

i've been trying to evaluate this particular expression:
restart:
assume(x::real,0<x,x<1); is(x < tan(x);

and I keep getting a FAIL. Any ideas? is there something i'm not assuming? not enough info?