Sorry because I can not good speak English. I want to draw a graph with maple 10.

I want to draw a polar contour. I have some datas in a txt file. I want to read data and plot graphic. My datas have 3 colums. first column is radius (r) ,second column is angle (theta) ,third column is my fuction z. z=f(r,theta).

I do readdata and my datas reading. But I not drawing a contour graphics.

How do I to solve this problem?

1. The toolbox "Maps" within the Maplesheet "Introduction to the mathematics of maps" is not loading.

2. The code maple.lib is stored in a directory c:/maps

3. The toolbox maps is refered to as:  libname:= libname,  "c:/maptools", "c:/maps";

Maple returns:    libname := "C:\\Program Files\\Maple 10/lib", "c:/maptools", "c:/maps"

4. The maptools is opening fine, but not the maps toolbox.

Hi,

I opened an older worksheet (from version 9 I think) and opened it in version 10. In the new version it produces different results.

In version 9 the solution found with the solve function included sinh and cosh terms. The new version uses their exponential forms. The expressions are now much bigger, but are probably the same in effect. However I would like to get the Maple9 behavior for this solution.

I have tried the convert (function,trigh) but that didn't result in the clean function I got in earlier version.

Any ideas?

M.

 

Hi there :) I often need to plot datapoints, and then fit a curve in then. So far i did this with the [i]ScatterPlot[/i] command, and moddeled the function to the data with the Fit or Nonlinearfit command. In most cases this worked really great, but i would need some extras: ;) As far as i have noticed the Fit is only based on the datappoints. The Fitfunction doesn't seem to take care of x- or y-errors, drawed in with the data. So: Is there a way to take care of the x- and y-errors in the Fitting process? If yes, how?

When I right-click on a 387x387 Matrix my pointer turns into a processing indicator and the system sits endlessly.  Other than killing the maple server process is there a way I can instruct Maple to cancel processing and make it responsive again?

hi, I was wondering how I can plot a phasediagram for the Solow growth model which has k(dot) on the y-axis and k on the x-axis and that has arrows that point in the right direction above k(dot)=0 and arrows that point in the left direction below k(dot)=0 The code I use to plot k(dot) is: restart: y:=A*k^a: S:=s*y: BE:=(n+g+d)*k: k_dot:=S-BE; s:=0.7: A:=1: a:=0.3: n:=0.06: g:=0.04: d:=0.03: plot(k_dot,k=0..15,color=blue, labels=["k", "k_dot"]); works fine but I am missing the arrows....

Hi,

Is there something like

assume(a,'nonzero');

 

 

how could i tell maple that

a

is a nonzero constant?

 

Thanks

i got problem coz i dont understand nor know what command i need to type in maple, really need help,

Question:

Hi all

 

I have spend too much time trying to figure out why Maple won't solve this equation explicitly. Here is the code:

 

assume(0 <= s, 0 <= w, 0 <= t, 0 <= h):

diff(((w-s)^(1-t)-1)/(1-t)+(((1+r)*s)^(1-t)-1)/((1+h)*(1-t)), s);

solve(%, s)

 

It returns:

 

-(w-s)^(1-t)/(w-s)+1/(1+h)*((1+r)*s)^(1-t)/s

RootOf((w-_Z)^(1-t)*_Z+(w-_Z)^(1-t)*_Z*h-((1+r)*_Z)^(1-t)*w+((1+r)*_Z)^(1-t)*_Z)

 

I'm trying to find the greatest common divisor of two functions with characteristic=7:

with(Algebraic):
GreatestCommonDivisor(x^4+x^3+4*x^2+4*x+5,x^3+x^2+5*x+5,'characteristic'=7);

This gives the answer as (x+4) which is a common divisor but it is not the greatest. From working by hand, I've found that (3x+5) is the gcd.

Why is maple giving the wrong answer?

hi, i am new to this and when i start up maple 11 i get the following error : "Java Virtual Machine Launcher,  Could not create the java virtual machine"

i hope there is a solution to this because i have searched everywhere and i cant get the solution.

error: http://img369.imageshack.us/my.php?image=problem1ek9.jpg

thanks

I am trying to solve the following equation with maple

g:=t->(-l*a^2*t+l*a^2*r^(-1/(a-1))*(A*l)^(-1/a)*(1-t)^(-1/a)*exp(1/(a-1))*t-l*a^2*r^(-1/(a-1))*(A*l)^(-1/a)*(1-t)^(-1/a)*exp(1/(a-1))+l*a^2-l*a-2*l*a*r^(-1/(a-1))*(A*l)^(-1/a)*(1-t)^(-1/a)*exp(1/(a-1))*t+2*l*a*r^(-1/(a-1))*(A*l)^(-1/a)*(1-t)^(-1/a)*exp(1/(a-1))+l*t*a-a*r^(-1/(a-1))*(A*l)^(-1/a)*(1-t)^(-1/a)*exp(1/(a-1))+l*t*r^(-1/(a-1))*(A*l)^(-1/a)*(1-t)^(-1/a)*exp(1/(a-1))-l*r^(-1/(a-1))*(A*l)^(-1/a)*(1-t)^(-1/a)*exp(1/(a-1))+r^(-1/(a-1))*(A*l)^(-1/a)*(1-t)^(-1/a)*exp(1/(a-1)))*exp(-1/(a-1))/(t-1)/a;

Does anybody know of a way to change the direction of an axis label in a plot without going back to the code and re-plotting? In the file I am working with that code has been deleted. It is possible to change the wording, font etc. of the labels, but I cannot find a way to change their directions. This becomes very annoying when I have a long label title on the y-axis, as my plot gets scrunched. Any help would be greatly appreciated. Thanks. -Evan

Greetings. Using the sequence command, I can generate a list of numbers.

>seq(1/(n^2+1), n=1..10);

1/2, 1/5, 1/10, 1/17, 1/26, 1/37, 1/50, 1/65, 1/82, 1/101

Given the list of numbers above, how does one derive

1/(n^2+1)

This is a specific example.  I am looking for a general case.  I scanned the genfunc and gfun packages, but I must be missing something.

 

Regards,

Georgios Kokovidis

 

 

Has anyone ever written procedures in C that can be called from Maple on MAC OS X? I have looked at the WRAPPER help page and given it a go but I am completely lost. I have compiled the example C code from the WRAPPER page with XCode as a "shared library" but when I try to define it in maple I get the following error: