This is not possible. There are too many factors. 1: Does the problem of interest have a solution? Numeric or symbolic for that matter. 2: What type of machine is the problem run on? 3: Some people use distributed computing, where a big problem is broken up and run on multiple machines. I am assuming this is not your particular case, but it will determine computation time. Post your particular problem with the exact code if possible. Maybe there is something in your code that is causing Maple to compute for so long without a solution. Regards, Georgios Kokovidis

From a previous posting here at Mapleprimes: http://www.mapleprimes.com/forum/finding-largest-entry-in-a-matrix Regards, Georgios Kokovidis

The link below might be helpful to you for the types of problems that you are working on. Just cut and paste into your browser. www.rose-hulman.edu/Users/groups/packets/HTML/modern/maplepg.htm#LGHTBULB.MS Regards, Georgios Kokovidis

Axel, my German is rusty. What exactly is a fauler Hund. I take it from your comments above that this is a student of yours? Regards, Georgios Kokovidis

Because of the exponential, you can not factor this. You can pull out the quadratic term and factor that, and then multiply it by the exponential if you like, but that will not help much in determining where the roots are. Start with a plot, and then use fsolve to determine where the roots of the equation are. > restart: > factor(6*x^2-7*x-3); > plot(6*x^2-7*x-3*exp((-1/5)*x),x=-1..2); > fsolve(6*x^2-7*x-3*exp((-1/5)*x),x=-1..0); > fsolve(6*x^2-7*x-3*exp((-1/5)*x),x=0..2); Regargs, Georgios Kokovidis

Maple 10, not the Classic Interface, has this already. With the Classic interface, you use the abs() function. In Maple 10, this is available under the Expression Palette. It shows it as |a|. When you click on this, |a| is inserted into your worksheet, and you can type in between the bars your function of interest. Clicking the |a| on the expression palette and typing in 3+4*I in place of the "a", returns 5, as it should. Hope this helps. Regards, Georgios Kokovidis

Do you have a copy of the symbolic toolbox for Matlab? If not you can not do this. Matlab is stricly a numeric package. You have to substitute numbers for your variables and then perform an fft, using the fft function. Then you can plot it using the plot command. In Matlab, help plot will display the help commands available for the plot function and help fft will display the help commands for the fft function. At the Matlab prompt, if you type fftdemo, you will see and example of the fft command in action. If you want to see the code used for the fftdemo, you can display it by typing the following at the Matlab prompt: >> help plot >> help fft >> fftdemo >> type fftdemo Regards, Georgios Kokovidis

Yes you can. If you are using the professional version of Matlab, then the Maple engine is available as a toolbox. The Mathworks has two versions. One is a basic version and the other has more symbolic functions associated with it. If you are using the student version of Matlab, it should come with a basic version of the symbolic toolbox already. Regards, Georgios Kokovidis

> restart: > x:=a+b+c; > v := array(1..3): > for i to 3 do v[i] := op([i],x) end do: > print(v); Regards, Georgios Kokovidis Dräger Medical

?if Previous versions of Maple used fi to end an if statement. > a := 3; b := 5; > if (a > b) then a else b fi; 5 > if (a > b) then a else b end if; 5 The above statements are equivalent. The preferred method is end if. fi is supported for backwards compatibility. Regards, Georgios Kokovidis

Look at the help page for display to see more animation examples. ?display Adding the parameter insequency=true should allow you to play back your plot. Right click on the plot, go down to Animation and select Play. > display([A,B,C,D,E,F,G,H,J,K,L,M,N],insequence=true); Regards, Georgios Kokovidis

Save the data as a text file in Excel. For example, the data below was saved using Excel into a text file called data1.txt 1.5 2.02 3.04 2.07 3.4 5.6214 3.6 5.33 1.0667 Read in the data with the readdata command, and then convert to a Matrix using the convert command. The 3 at the end of the readdata command let's it know that there are 3 columns in the data file. > restart: > data := readdata("C:/temp/data1.txt", 3) ; data :=[[1.5, 2.02, 3.04], [2.07, 3.4, 5.6214], [3.6, 5.33, 1.0667]] > convert(%,matrix); [1.5 2.02 3.04 ] [2.07 3.4 5.6214] [3.6 5.33 1.0667] Regards, Georgios Kokovidis

In your current worksheet, replace your last line with the sum command to use the add command instead. For an explanation as to why each behaves the way it does, take a look at the link below. Joe Riel has already answered your question in a previous post. www.mapleprimes.com/forum/sum-versus-add Regards, Georgios Kokovidis

An example below: > restart: > polynomials:={3*x^4*y^2 = 17, x^3*y - 5*x*y^2 -2*y = 1}: > ans:=fsolve( polynomials ); > assign(ans); > x;y; At this point, I insert a spreadsheet. When I click on the A1 cell and type an "x", and then click out of the cell or hit the Enter key, the value of "x" gets inserted into the cell. When I click on the B2 cell and type in a "y", then the value of "y" gets inserted. Regards, Georgios Kokovidis

See attached file. Let me know if the answer is what you are looking for. If it is, then the problem is in the use of sum. Regards, Georgios Kokovidis View 221_binomial2.mw on MapleNet or Download 221_binomial2.mw
View file details