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  Maple 12 and ubuntu linux         


Author: wkehowski
Date: Jul 22, 2008 17:31

Hello,

Whenever I open a new worksheet there is no response to the keyboard.
I keep trying and eventually a worksheet will open that responds to
the keyboard. A workaround is to start a new instance of Maple, open a
worksheet, copy its contents to a blank worksheet, and hope I get
response to the keyboard.

Still managing to have fun though.

Walter Kehowski
no comments
  An exact simplification challenge - 67 (MeijerG)         


Author: Vladimir Bondarenko
Date: Jul 22, 2008 01:38

Hello,

+ MeijerG[{{1}, {5/4, 7/4}}, {{1, 1, 3/2}, {}}, 1]
+ MeijerG[{{1}, {7/4, 9/4}}, {{1, 3/2, 2}, {}}, 1]

?
Best wishes,

Vladimir Bondarenko

Co-founder, CEO, Mathematical Director

http://www.cybertester.com/ Cyber Tester, LLC

------------------------------------------------------

"We must understand that technologies
like these are the way of the future."

------------------------------------------------------
no comments
  Constructions         


Author: aathi
Date: Jul 21, 2008 06:25

Constructions

Crippa spa

Constructions Tamilnadu

http://constructsparts.blogspot.com/
no comments
  An exact simplification challenge - 66 (MeijerG)         


Author: Vladimir Bondarenko
Date: Jul 20, 2008 23:56

Hello,

MeijerG[{{-1, 0, 1/2}, {}}, {{-1/4, 0}, {-3/4}}, 1]

?
Best wishes,

Vladimir Bondarenko

Co-founder, CEO, Mathematical Director

http://www.cybertester.com/ Cyber Tester, LLC

------------------------------------------------------

"We must understand that technologies
like these are the way of the future."

------------------------------------------------------
3 Comments
  size of plots         


Author: Berti H.
Date: Jul 20, 2008 11:03

Dear Mapologics,

I ask the question again, because there is now maple 12 available:

is there a chance to fix the size of plot in the printout of a document.
I use Maple 11 in document mode. If I print the document, the e.g. graphs of
functions are very large. I can make them smaller by using the mouse, but
this is not very exact.
I want to have all the graphs in a special size (e.g. 5 cm x 5 cm) in the
printed document.
How can I do this? Is it possilble in Maple 12?

Thanks in advance

Bert
no comments
  An exact simplification challenge - 65 (MeijerG)         


Author: Vladimir Bondarenko
Date: Jul 20, 2008 01:02

Hello,

MeijerG[{{-1/2, 1/2}, {5/2}}, {{-1, 0, 1/2}, {}}, 1]

?
Best wishes,

Vladimir Bondarenko

Co-founder, CEO, Mathematical Director

http://www.cybertester.com/ Cyber Tester, LLC

------------------------------------------------------

"We must understand that technologies
like these are the way of the future."

------------------------------------------------------
2 Comments
  is this approximation useful?         


Author: Dushan Mitrovich
Date: Jul 19, 2008 22:09

In the course of working on an electromagnetics computation I ended up
developing an approximation for the Complete Elliptic Integral of the
Third Kind as both its arguments approach unity. Such an approximation
may - and probably is - already known, but I hadn't encountered it in the
references I had available (Abramowicz & Stegun, and an older copy of
Gradsteyn & Rysick). It's a two-parameter fit for

EllipticPi(1-x^2, 1-y^2*x^2)

as x -> 0 (x assumed real) and y^2 is in the range (0,1]. The approxi-
mation is adequate for my purposes (about 1%% or better, to handle the
singularity in an integral over x) but I haven't bothered to quantify it.

Is there an existing approximation in this limit? If so, I'd like to
know where to find it. If not, would it be useful to add it to some
repository? Where?

Thanks for comments.

- Dushan Mitrovich
no comments
  help! I have difficulty finding the Fourier transform         


Author: Luna Moon
Date: Jul 19, 2008 21:40

Hi,

I have difficulty in taking fourier transform of a function f(t).

The function f(t) is not integrable. Through analytical analysis, f(t)
behaves asymptotically the same as a*log(t)/t

for t-> +infinity; and f(t) behaves asymptotically the same as b*log(-
t)/t

for t-> -infinity; where "a" and "b" are some constants.

Is there a way to work around this difficulty and get some sort of
fourier transform of this function f(t), possibly

involving extended functions or functions which can only be evaluated
numerically or distribution functions...

Any thoughts?

Thanks a lot!
13 Comments
  An exact simplification challenge - 64 (MeijerG)         


Author: Vladimir Bondarenko
Date: Jul 19, 2008 21:26

Hello,

MeijerG[{{-4, -7/2, 1/2}, {}}, {{0, 0, 1/2}, {}}, 1]

?
Best wishes,

Vladimir Bondarenko

Co-founder, CEO, Mathematical Director

http://www.cybertester.com/ Cyber Tester, LLC

------------------------------------------------------

"We must understand that technologies
like these are the way of the future."

------------------------------------------------------
1 Comment
  limit of a map with two variables         


Author: Bruno
Date: Jul 19, 2008 15:14

Hello,

Let f : R^2 ---> R, (x,y) |---> f(x,y), a map of two variables.

Is it possible to calculate, with Maple, the limit of f at a point (a,b) \in
R^2 ?

For instance : f(x,y) = x^3y / (x^4 + y^2). I calculated (on paper) that
\lim_{(x,y) \to (0,0)} f(x,y) = 0, but I would like be sure of this result
with Maple. How to do this in Maple (if it's possible) ?

Thank in advance for your answers,

Bruno.
2 Comments
 
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