1) I would like to see the possbility of color-coding the assumed variables (insteas of the ~ postfix or a text). Expressions with a lot of ~ are soon illegible, and anyway cannot be easily published. Color seems an obvious possibility.

2) I would also like to see an "execute worksheet up to cursor" option. This would be useful to test modifications of long worksheets, where performing a manual selection is cumbersome. Such an option is common in debuggers, for instance.

I recently discovered a minor variation on the technique of building a set using a table. The purpose for using a table rather than inserting new items directly into a set is that, in a loop, the latter technique is O(n) rather than O(n).  The way I would normally do this is to assign a counter and an empty table, and then, in a loop, compute the new element, increment the counter, and insert the element into the table at the counter index.  For example,

Reading Alejandro Jakubi's Saving Results article, I got interested in new ExcelTools package.

First surprise - it doesn't work from Classic, works only from Standard Interface (that was mentioned in the help pages.) Well, I started Standard Maple and did the example from the help page,

It's not often that a funny music video is made about Fractals. Here is something very special:

Ever wondered how you can create filenames by cycle.

Well, I did, because I needed it. And I came up with something that works and because once i forgot it, I decided this time to put it here. At least, I won't forget again :) If you have a better way to do it, please, say so.

The idea:

>A:=`/home/Data/file_`; B:=`.txt`;

>for i from 1 to 3 do C:=cat(A,i,B); writedata(`C`,[i],integer);od;

Dear Folks, I find this interesting. I tried this integral using the CauchyPrincipalValue command and got one result. I also tried doing the principal value manually (integrating up to the pole then from the pole to infinity and adding the two) and ended up with something different. Any thoughts? Could somebody try it on Mathematica (I don't have it on my computer)? Int(omega*sqrt(x)/(x*(omega-x)),x=0..infinity)=int(omega*sqrt(x)/(x*(omega-x)),x=0..infinity,CauchyPrincipalValue);

solve used to be one of Maple's strongest commands -- it even subsumed simplify in power.  But, over the years, dsolve slowly took over as the most powerful comand.  At the same time, people started realizing that within the framework of differential equations, the toolbox was actually larger than the one for algebraic equations (and most algebraic tools are still available).  So many tasks that one thinks of doing purely algebraically can also be done using differential equations, with perhaps the most surprising one is to factor multivariate polynomials via partial differential equations.

Hello All:

I hope I don't get flamed here, but I have run into a lot of difficulty trying to do something that I consider a basic required feature of any analysis and visualization tool. I'm talking about labelling plots (titles, captions, axes, legends, etc.) with both text and greek symbols (at least!). Anyways, I have become very frustrated at this, and now I am trying to make a case for why this should be clarified and simplified for those of us who have Maple (I have both Maple 10 and Maple 11 for what it's worth) in the hopes that the powers that be make this a priority.

solve(piecewise(Or(x=1,x=2),1,0)=1);

                       {x = 1}, {x = 2, x <> 1}

The expected answer is 1, 2. That would be consistent with

solve(piecewise(Or(x=1),1,0)=1);

                                  1

solve(piecewise(x=1,1,0)=1);

                                  1

Alec

For t := x^(1-I), f := arcsin(t) + arcsin(1/t) i have problems with

  dd:= PDEtools[dpolyform](y(z)=f,no_Fn);

                           d
                    dd := [-- y(x) = 0] &where []
                           dx

is(1+I in ComplexRange(0,2+2*I));

                                false

I couldn't find any value giving true.

Alec

 

Hi, there,

I am using Maple and Excel to handle a huge amount of data.  The problem is, every time after I change some parameters, I need to select the cell which contains a Maple add-in, and press the "enter" key to execute the Maple calculation.  The whole Excel sheet won't do the calculation job automatically only because of the Maple add-ins.

Does any one have any solution?  It is too annoying and tedious to hit the enter for handreds and thousands of times.

My Maple is Version 11 and Excel is Version 2003.

Cheers,

Dear All, On doing the following integral I get different results analytically and numerically. # Define the integrand P3 := proc (x, m) options operator, arrow; -(1/2)*(-1+4*x^2*m^2+8*x^3*m+2*x*m-3*x^2+m^2)/((2*x^2+1+2*sqrt((x+m)^2/((x+m+1)*(x+m-1)))*x^2)*(x+m+1)*(x+m-1)*sqrt(x)) end proc; IntegralP3 := proc (m) options operator, arrow; Int(P3(x, m), x = 0 .. infinity) end proc; evalf(IntegralP3(1.0)); -2.262741700 int(P3(x,1),x=0..infinity); 0 evalf(-8*sqrt(2)/5); -2.262741699

Hi,

 

I have problems with starting [x]maple on gentoo.

First of all my debuged installation: