The attached file solves a system of equations in a couple of seconds in maple 9.5
But in classic worksheet maple 10.04 after many minutes it gobbles up gigabytes of memory and then ends with an error.
The file belows shows the details but it has the form
sys:={eq1,...eq22}:
solution:=solve(sys,{var1,...var22}):
Any comments very much appreciated.
Download 2129_No Solve.mws

i have a equation such as : f(qa)= 75-0.4*qa^1.5
i would like to know how to know the maximum of qa when qb is 0 and vise versa.
also how to plot a slope a a given point for example qa = 0 or 20.

Hi,
My name is Jennifer.Iam new to Matlab programming.Iam working on reducing the noise content in audio communication. Iam using Hamning codes for the same.I have a sample code with me,which iam unable to upload because it says that maximum file size exceeded.Iam unable to understand how it works.Can someone please explain me how the code is written,what it means and what the different plots mean and how to read them? I have trouble especially with the plots trying to understand them.
Being a beginner,Iam having a lot of trouble trying to understand.Iam trying to read Matlab tutorials at the same time but I have to finish up this work soon before the deadline.So can anyone be kind enough to help me through this please? My email id is jennifer22cute-single at yahoo.com

hi!
i need your help, i am a student of economics and i have to solvean exercise in maple but i can't do the last point;i have stopped just at the end of the exercise!
please if anyone can do it orgive a help how to solve it i will very grateful.the exercise is how to calculate the days between two dates.i can't attach the file because the total file exceeded
thank you

How do i make a curved arrow in maple 9.5 to show a rotaton arround an axis in a plot?

I have a maple worksheet (attached) that calculates a 2-D convolution. Should be easy, I would guess. The convolution of a gaussian and a gaussian is very fast-- this has a simple analytical result anyway. A gaussian and a sinc function can take a couple of minutes... and a gaussian and a bessel function takes longer than I can allow! I think I must be missing something here. I've tried various things, interchanging "int" and "Int" for the integration, and also seting digits to something low, by using evalf[4]. Sometimes it just maxes out all available memory before grinding to a halt, in other trials it will allocate about 300 MB and churn for hours. The worksheet is attached. I'd appreciate the advice.

Do any of you have any graphics software suggestions for adding lines, text, etc. in EPS plots generated by Maple? I have have mainly only used Photoshop for editing plots while working with LaTex, but I have increasely become dissatisfied with the results. Any suggestions?
Thanks,
Phil

> procA :=

proc ()

print ("Hello");

2;

end proc:

> procB :=

proc ()

local i;

i := procA();

end proc:

> procA ();

"Hello"

2

> procB();

"Hello"

2

The main that I want to get is:

if it was executed procA, it should show "Hello" text and the 2 number, but if it was executed procB, it should show only the 2 number, it shouldn`t show "Hello" text.

What can I do to get this special result in procB?

Hi to All!
This is a true top secret story from Ph Dr S.Arlou
When I was a callow youth at my first year at the university I was very proud of my high rate in general course of physics. Besides I was rather good at mathematics as I was able to add fractions and find derivative of functions. I had only one thing lift to study – mechanics of materials. To my greatest disappointment I couldn’t manage with my test work on mechanics of materials after twenty attempts! The only consolation I found in the team of the same unfortunate students. It seemed to me that a student with an excellent knowledge of physics had to understand mechanics of materials. Its roots according to my brilliant conjecture™ are hidden exceptionally in physics. What’s the matter?
Years passed… More years passed… Some more time passed. All the time I tried to find the answer to my question, how mechanics of materials should be taught so that a child would be able to understand it, at least in general. During these hard meditations I had to be involved into absolutely useless things: post graduation studies, presentation of Ph.D. thesis, teaching at technical university, marriage at last. But Maple with its analytical potential burst into my life as a tornado. The answer came with a lightning speed. Mechanics of materials is short of the power of the power of analytical computing. We need as much of it as our head or laptop can contain.
In one word I invented Mechanics of Materials™ only to converge teaching of mechanics of materials to discussions about weather, magazine Forbes ratings and so on… or discussing scientific problems which are far beyond from our standard mechanics of materials curriculum.
My congratulations to all students on the occasion of a new academic year!
Details

maplesoft.com
mechofmat.com
Hi,

I am trying to ease my c coding work with the "CodeGeneration" tool in maple. The Idea to generate ready to use functions is quite thrilling.

In my attempts to generate code I entontert two problems.

First it seems to be impossible to assign local vectors to vectors passed in the argument list:

> MapX := proc (X\_out::Vector(2), X\_in::Vector(2), PRO2RO::Vector(2))

> local X\_t :: Vector(2,0), i;

> X\_t[1] := PRO2RO[1];

> X\_t[2] := PRO2RO[2]*10;

> X\_out := X\_in + X\_t;

> return;

> end proc;

here the assignment X\_out := X\_in + X\_t; is not recognized.

Hi,
is it possible to define a variable for example "x" upon which it depends whether an execution group in a worksheet will be excecuted when clicking on !!! (Execute whole worksheet) or not?
Illustration of the idea:
x:=1;
if x=1
then execute execution group
else do nothing
end if;
I am thankful about any ideas!

I have an expression, lets say
x^2+ y*z^2+y^3 and I want to divide it with x*y and I want the output to be
x/y+z^2/x+y^2/z
How do I do this?

Can anyone tell me why "type" answers "false" and why do I get an error message, from the following simple code sequence (Maple 10)?

Thanks

restart;

> testp:=proc(m);

> if (m=0) then 0;

> elif (m>0) then 1;

> elif (m<0) then -1;

> end if;

> end proc;

> assume(n,posint);

> about(n);

> type(n,posint);

> is(n,posint);

> testp(n);

> testp(-1);

testp := proc(m)

if m = 0 then 0

elif 0 < m then 1

elif m < 0 then -1

end if

end proc

Originally n, renamed n~:

is assumed to be: AndProp(integer,RealRange(1,infinity))

false

Hello,
I'm a complete Newbie. The first thing I did was to take the "10 Minute Tour" which is accessed through the help file. One of the things this tour has you do is to create an animated plot, which I did. However, the doc says "Clicking on the plot enables the animation toolbar.". Well, I click on the plot and my cursor turns into a curvey arrow, which let's me twist the plot around, but I don't get any animation toolbar. Could someone tell me exactly where and how to click to bring up the animation toolbar. The doc also mention an "animation slider". How do I get that?
-Thank

#1 Typically, on plots, removable discontinuities are represented by a small cicle at the discontinuity. How can such an object (i.e. the circle) be generated, preferrably automatically, by Maple at these points.
#2 Also, if, for example, the signum function is plotted
(i.e. a step discontinuity at x=0). How is an open circle plotted at (0,-1)
and a closed circle plotted at (0,1)?
Thanks in advance.