MaplePrimes Commons General Technical Discussions

The primary forum for technical discussions.
Hi, I have a small problem about returning the result from dsolve from a function in a package. In principle the problem can be described as: Package[Function] := proc.... dsolve(differential equation in x(t),numeric,method=mebdfi); end proc; In Maple: solution := Function(....); odeplot(solution,[t,x(t)],t=0..1); The result is the error message: Error, (in odeplot) curve is not fully specified in terms of the ODE solution, found additional unknowns {x(t)}, which in some way depend on that if I write subs(solution(0.5),x(t)); I get x(t) as result, ie, not the value of x(t) in t=0.5 which happens if I run the same stuff only in Maple command window.
Since recently working under a restricted user account in Maple 10.03 (win XP) I experience the following weird???) behavior. When I first fire up Maple and a new document opens the TOOLBAR is missing. As soon as I close the document, it (the TOOLBAR) magically appears and stays there. Does not happen when working with an admin account. But as I said it wasn't there on the limited account from day one either. Anybody has a clue? TechSupport does not seem to, other than suggesting to do a reinstall, which other than burning time accomplished jack thanks dk
Folks: I am developing an instructional material where one part I have to demonstrate the use of the sine law. While I have completed the material there is one aspect in my maplet code that I have to demonstrate how the given parts of a triangle such as side b=10, angle A=60, and angle C=75 are substituted into the sine law such a:=b*sin(A)/sin(C). However, my maplet code evaluates the expression a. I do not want maplet to evaluate the expression. I wanted my maplet code just to show the subsitution such a = 10 sin(60)/sin(75). This is the desired outcome. I tried doing this in maple: b:='10'; A:='60'; C:='75'; a:=b*sin(A)/sin(C); Maple gave me this: a = 10 sin(60)/sin(75). I wanted to replicate this maple code into maplet to produce the desired outcome. I have spent hours and hours to create the desired outcome in maplet but to no avail. Can someone at least give me a hint.
Folks: I have a maple code that appears to work but when translated to maplet I was not successful. b:='10'; A:='60'; C:='75'; a:=b*sin(A)/sin(C); Desired outcome in maplet is: a = 10 sin(60)/sin(75). I have spent hours and hours to create the desired outcome but to no avail. Can someone at least give me a hint. Thank you PV
Hello everyone, I am having problems using matrix constructions to augment/stack matrices together using Maple 9.0. The types of matrices I am combining are not huge, perhaps only 4 256x256 matrics into 1 512x512 matrix, although they do contain complex numbers that may be beyond hardware precision and therefore using arbitrary software precision. My main issue is with the speed this takes. If I use the old "augment" or "stackmatrix" constructors from the "linalg" package then this takes about 15 secs on my pc (1.4GHz 512MB) which seems unnecessarily long to me in the first place. Furthermore, if I use the new constructors from the "LinearAlgebra" package ("
I installed maple 10 on a 64bit linux machine (gentoo & ubuntu). The installation went fine with the graphical (java based) installer. Afterwardss it was possible to start maple on the console. But when I try to start xmaple or maple -x nothing happens, no error, just nothing.

Hoping it was a well know bug (?) I updated (with the 64bit update) maple 10 to maple 10.03. But still the same problem.

Due to the fact xmaple is a java based program, could it depend on the 64bit java shipped with the software?

I found in the forum two postings with exactly the same problem, without a satifying solution:
Hi, I imported some data from a csv file, and it's a big 2x1000 matrix, and it's assigned to a variable A, if I input A[1,1], it can't show the correct content in the matrix. On the contrary, if I input a matrix by hand, say a 3x3 matrix,and assign it to B, then I input B[2,1], I can get the correct number in the matrix B. Can anyone show me what's wrong? Also, how can take out one column or one row in a matrix and do calculations in the future? (say assign them to seperate variables and calculate and plot....) Thanks, Vic

One for the Maple bugkeepers. There seems to be a problem with DEtools[initialdata] -- in some circumstances the output initial data is wrong -- missing "D" operators. For instance, suppose one has a PDE system with dependent variables u(x), v(x,y). Then initialdata works. But if the PDE has dependent variabls u(x), v(y,x) then initialdata returns incorrect results.

To any maplet expert: The following maple code works and want to upgrade it using Maplet[Element](action(function=)) p1:=plot([[0,0],[15,0],[24.50,9.69],[0,0]],filled=true); t1:=textplot([0,0,"Angle A"],align=BELOW); t2:=textplot([15,0,"Angle C"],align=BELOW); t3:=textplot([24.50,9.69,"Angle B"],align=ABOVE); display({p1,t1,t2,t3}); However, I am having difficulty translating the above maple code into maplet using maplet[element](function=__). Or is this even possible? Thank you for what ever assistance you may provide. pv
I used to be able to do this copy/paste ... Here, I got an integral, then copied the output and pasted onto the next line. I wanted Maple input format, of course. Is it a change for Maple 10.03? for Mac? Or what? Have I got some setting wrong?
Dear colleagues: I am interested on taking some data from serial Port (Com 1) to process them with Maple. Can you give me some suggestion, library or anything that could help me? Greetings Somos4maple
I've been using Maple 9.5 on my mac for a while with no problems. Then last week my delete key stopped working. I can still highlight and delete but I can't delete straight text. Does anyone know what's going on with my Maple? Thanks!
If I attempt to evaluate the integral int(exp(I*z*cos(x)),x=0..Pi), I should get a Bessel Function, in fact J_0(x). But Maple does not do this, the way I use it. How does make maple10 recognize such integrlas?
To my fellow maple user: I wanted to label critical point/s in plotted curve. For example: plot y=x^2 + 5. P(0,5)is the vertex. I like to label this point as "Vertex" on the plot itself. Thanks in advance for any assistance. pv
Hello, I was hoping someone could suggest a way to add a index counter to the title of a Maple plot. I have some snapshots of an animation that I wish to include the value of the for loop/index counter in the title. Does anyone have any suggestions? I am using Maple 10. Thanks very much for any help, sbh.
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