Saving a 3D object computed in Maple.  Maple itself has only limited capabilities for this.

There is a Maple library called JavaViewLib that sends the data from Maple to a Java applet called JavaView.

From there it can be viewed and saved in many different formats.

Find all the info at www.javaview.de

The last web page update was 2006, but the server that provides the free licenses is still running.

Mostly JavaViewLib...

Hello everyone,

Please help me with this:

I have a given matrix (with numbers size nxn), within this matrix there is also some parameters. I am asked to find all the b vectors that solves this equation. Important: Firstly, I was asked to find the parameters that gives us Determinant(A)=0.

I have a difficulty with 2 parameters or more, and how I suppose to solve this if x and b are (x1,x2,x3)', (b1,b2,b3)' i.e not given.

I have noticed that editing in Maple 14 in document mode becomes very sluggish if the Greek palette is left expanded while editing.  I also seem to see a refresh of the palette (maybe a very quick flash) at this time also.

Editing seems to return to normal if the palette is closed.

I am just curious if anyone else has observed this behavour.

Regards,

Frank

I try to make calculation with matrix in matix for example

n1 >0 , n2 >0; n1 ,n2 unknow
matirx  A11 := matrix(n1,n1,[unknow variables ]);
matirx  A12 := matrix(n1,n2,[unknow variables ]);
matirx  A21 := matrix(n2,n1,[unknow variables ]);
matirx  A22 := matrix(n2,n2,[unknow variables ]);

A_big := matrix(n1+n2,n1+n2 , [[A11,A12],[A21,A22]]);

how i will sovle

A_big ^ (-1) ;

The wrong answer is
matrix(...

Hi,

I want to plot a 3D function which is a summation of some other 3D functions (i.e. g(x,y) = f1(x,y) + f2(x,y) + ...). If I add them parametrically as they are, it will be a big parametric function of (x,y) and plotting takes a long time. To overcome the problem, I am thinking of calculating each function (e.g. f1(x,y)) and store its results in a matrix  for each, and then sum up all stored results. First of all, please let me know if there is an alternative...

I've been trying to evaluate another integral, like exp(-(alpha*x)^2) from 0, to infinity;

However it expresses the answer as a limit of some function(alpha), how do I get the integral to come out more exactly?

Thanks

Hello,
I have to find the internal of
E_field := conjugate((-.7147663039-.8729430992*I)*exp((9.123185068*I)*cos(phi))*cos(phi)+(0.3187576278e-1+0.3371906130e-1*I)*sin(phi)*exp((4.561592534*I)*(-1.*sin(phi)+cos(phi)))+(0.7062621752e-1+.1302618973*I)*cos(phi)*exp((2.000000000*10^(-11)*I)*(53.*cos(phi)+1.570796328*10^11))+(-0.3187599160e-1-0.3371906130e-1*I)*sin(phi)*exp((4.561592534*I)*(sin(phi)+cos(phi))))*sin(phi):

I try to solve by
evalf(simpson(E_field, phi = 0..2*Pi));

Some Posts and Questions contain broken links to files uploaded in the "old Mapleprimes". We've heard that some files (eg. image files) may be irretrievably gone.

But here is a curious page. It had an associated .mw worksheet uploaded. And the link to the uploaded .mw is now broken/stale, at the moment that I write this. But the link to view it with the maplenet viewer, in one's browser, still works. Not only that, but the .mw worksheet can be saved from within that viewer (via a URL distinct from the broken link on the Post).

How does one read in files with incremental names?

I have

for i from 1 to 10 do
   a||i:=readdata(`c:/test/i.txt`,string,7): 
end do:

I don't know how to escape the i out of the quotes so it can be used in the loop. 

I was trying to evaluate a 2-dimensional integral, but my answer contained an expression like pi/pi^2;  even trying to simplify this did not reduce the fraction properly. Why does this happen, and how can I get it to display the answer properly?

Thanks

The MRB constant is the upper limit point of the sequence of partial sums defined by s(n)= .

Each summand is a real number. However, the function f(n)= is a complex-valued function of a real number, n. This blog is a break in progression of the MRB constant series for the purpose of looking at the "complex" nature of this function. The function can be written in exponential form, .

With this first post I would like to demonstrate, in a Maple document, what happens to f [-2,0). When put together (-1,0) these graphs seem to be describing a hyperbolic spiral. I'm not sure if I'll have more to say, or not. As always, others are welcome to join in.

Download f6142010.mw

It seems that links to files in the old forum do not work,

for example http://www.mapleprimes.com/files/102_Garch.mws

This is the link as seen in http://www.mapleprimes.com/posts/38093-Financial-Numerics-Estimating-Garch11

Or otherway asked: where do I find my files (as former user no. 102)?

Hey everyone,

I've been using nonisomorphicgraphs for a while now, and my professor would really like to know if there is a pattern in the order in which it spits out the graphs. I've noticed that they pair them up in complements of each other(or as close as possible), but has anyone found the order in which they come out, and what the reason for this order is?

A recent announcement: ViennaCL, an OpenCL (GPU) based linear algebra library.

It would be interesting to see how it might be used from within Maple via external_calling (even if only for some simple examples).

I got two columns of data in excel: current (I) and voltage (V). What i want to do the following things:

1. read the data set into Maple 12.

2. plot the current vs voltage

3. Fit the plot to the function with polynomial form:  I=aV^2+bV

4. find the R-squared value of the fitted function.

Could anyone kindly tell me the detailed code to achieve this, thanks a million.