Just enter it the way you have it above. The answer will be in terms of Sine Integrals. You can also use the Student Package. The answer you get there will be the same as entering what you have above. >restart: >int(int(A*sin(2*Pi*B*(alpha-beta))/(Pi*(alpha-beta)),beta=-T/2..T/2),alpha=-T/2..T/2); or >restart: >with(Student[MultivariateCalculus]): >MultiInt(A*sin(2*Pi*B*(alpha-beta))/(Pi*(alpha-beta)),beta=-T/2..T/2,alpha=-T/2..T/2); Regards, Georgios Kokovidis

Look at the help page for the piecewise functions and it will become clear to you as to why this is happening. >?piecewise As you will see, as long as your value of n is less than 8, then it will always return zero, and then you sum that with the previous term. 0+0+0+.. To make it clear, try your code without the sum command to see what it returns. Regards, Georgios Kokovidis

At the Maple prompt, enter one of the following: >?LinearAlgebra or >?LinearAlgebra[MatrixInverse] and look at the examples provided. If this does not help, then enter the problem you are trying to solve exactly so that we have a better idea of what you are trying to do. Regards, Georgios Kokovidis

Take a look at the file listed below from the Maple Applications Center. It should provide a clear explanation of the differences between the student and Student packages. http://www.maplesoft.com/applications/app_center_view.aspx?AID=1659 Regards, Georgios Kokovidis

More info is needed. Are you trying to plot the directional field of a solution to a differential equation. If so, then what is the differential equation that you are trying to plot a directional field of. Otherwise I see an equation with an independent variable w on the left hand side with respect to a dependent variable t and w on the right hand side. Please clarify. Regards, Georgios Kokovidis

The line >b:=plot(2*x-110,x=32..112): was an example to show how a function and a list of points can be plotted on the same graph. x=32..112 is the range of values that x takes to create the plot. You can change this to customize the range of the x-axis. The plot command connected the dots. The pointplot command below will display the dots individually. Using the commands plot or pointplot will generate a plot directly. You need to use a semicolon at the end to get the graph. By assigning the plot to a variable and using a colon to terminate, you can use the display function to combine both of the plot structures together on the same graph. Notice that there is an asterisk between the x and 0.1875 to denote multiplication. >restart:with(plots): >plot(0.1875*x,x=0..100); >L := [[32, 6], [48, 14], [64, 24], [80, 38], [96, 55], [112, 75]]; >pointplot(L); >a:=plot(0.1875*x,x=0..100): >b:=pointplot(L): >display(a,b); Regards, Georgios

>restart:with(plots): >L := [[32, 6], [48, 14], [64, 24], [80, 38], [96, 55], [112, 75]]; >a:=plot(L): >b:=plot(2*x-110,x=32..112): >display(a,b); ?display for more help Regards, Georgios Kokovidis

Take a look at the link below to get some ideas. Modify the code to fit your own needs. http://web.alfredstate.edu/takeuchi/maple9.htm Regards, Georgios Kokovidis

It is under Active Discussions. Title is: Help Using The LegendreP Function I have been looking at it but so far I have not been able to come up with anything useful. //Georgios

Does your output look like list of numbers. If so, look into the writedata command. >?writedata The line below will write the output (assuming it is a list of numbers, to a file called data.txt that you can open in excel and load. If the output is not a list of numbers, then you have to make it so. Post all of the code that you are using so that it is clear what you are trying to do. >writedata(`c:\\temp\\data.txt`,soln3); Regards, Georgios Kokovidis

Use the display command. ?display for more help on this. >restart:with(plots): >r1:=dsolve({D(y)(x)=y(x),y(0)=1},type=numeric,range=-5..2): >p1:=odeplot(r1): >r2:=dsolve({D(y)(x)=y(x),y(0)=2},type=numeric,range=-5..2): >p2:=odeplot(r2): >display(p1,p2); Regards, Georgios Kokovidis

From a previous thread here at Mapleprimes: What you are trying to do does not work. It is known. Look at the link below for a better explanation. http://www.mapleprimes.com/forum/maple10-manual-pg-248 Regards, Georgios Kokovidis

From Maple you can call certain Matlab functions directly. ?Matlab for more help. Specifically, look at Matlab[getvar] - get a numerical array or matrix in an open Matlab session. From within Matlab, you can lauch an external program (Maple). Having a Maple worksheet that Matlab opens with the commands >restart; >with(Matlab); should allow you to get started. This is not as elegant as having the Maple Toolbox for MATLAB installed under Maple. Hope this helps, although it might not do what you are looking for. Regards, Georgios Kokovidis

> restart: > x:=polar(3+4*I); x := polar(5, arctan(4/3)) > R:= argument(x); R := arctan(4/3) > magnitude:=abs(x); magnitude := 5 > angle:=evalf(convert(R,degrees)); angle := 53.13010234 degrees > rect:=(magnitude,angle); rect := 5, 53.13010234 degrees Regards, Georgios Kokovidis Dräger Medical

The plot shows up empty because it is an animation. Once the plot window shows up, right click on it with your mouse, scroll down to Animation, and click the Play button. Regards, Georgios Kokovidis