?implicitplot3d for more help. >with(plots): >implicitplot3d(x+y+z=3, x=-10..10, y=-10..10, z=-10..10); Regards, Georgios Kokovidis

Copy and paste the line below and see if it does what you want. printf will definitely work for this, but the output will not be in pretty print mode. You can always highlight the output afterwards and italicize/center it if you like using the toolbar menu items. printf(" X_bar[1]=Mean_SampleMeans1, S[1]^2=Var_SampleMeans1, S[1]=SD_SampleMeans1"); Regards, Georgios Kokovidis

Look at the "alias" and "macro"commands and see if they will do what you want. >?alias >?macro Regards, Georgios Kokovidis

Is it possible to mix geom3d and plot3d surfaces, and plot in the same plot? Yes,it is. >restart: >with(plots):with(geom3d): >p1:=plot3d([u,sqrt(u^3/(2-u))*cos(v), sqrt(u^3/(2-u))*sin(v)], u=0..1, v=0..2*Pi): >display(p1); >point(A, 1,2,-1): point(B, 0,0,-1): point(C, 3,0,0): >sphere(S, [point(O,0,0,0),1]): >draw(S,style=wireframe); >p2:=draw(S,style=wireframe): >display(p1,p2); Regards, Georgios Kokovidis Dräger Medical

After 20 minutes, on my workstation, it is still crunching away. I am using the Classic Interface version of Maple 10.06 on a Win XP SP2, dual Xeon workstion @ 2.4 GHz with 2.5G of ram. While Maple is doing it's thing, I can keep working on other things, like this message. If I look at Maple, I see that it is still busy, but it is not affecting anything else I do on my machine. Regards, Georgios Kokovidis

Take a look at the link below. This is from one of my previous posts that sounds similar to what you are trying to do. Scroll all the way to the bottom and look at my code. You can use that as a starting point. It plots both the 3d surfaces as well as the intersection points, but you can ommit the 3d stuff and just plot the intersection. http://www.mapleprimes.com/forum/3d-plot-intersection-of-plane-with-sphere-and-tetraeder Regards, Georgios Kokovidis

The problem is with (f). You can not have imaginary data. From the help page: All computations involving data are performed in floating-point; therefore, all data provided must have type realcons and all returned solutions are floating-point, even if the problem is specified with exact values. ?type/realcons for more info on this. Regards, Georgios Kokovidis

At the Maple prompt, type ?DEplot and hit the enter key. This will bring up the help page for DEplot with examples at the bottom of the page. To use DEplot, you must first load the package DEtools. >restart: >with(DEtools): >DEplot(t*diff(y(t),t)+2*y(t)=sin(t),y(t),t=-0.2..0.2,y=-0.2..0.2,arrows=MEDIUM); Regards, Georgios Kokovidis

...that the trig functions only take arguments in radians. Is this true ? Yes. Is there no way to use arguments in degrees for the trig functions ? There is. See link below from a previous thread. http://www.mapleprimes.com/forum/degree-mode-like-my-ti-89-has Regards, Georgios Kokovidis

This does not exist (yet). Some Matlab functions have direct equivalent Maple functions, although the names might be slightly different. Porting C code to Maple should be easier, although you might take a speed hit if the C routine is strickly numerical in nature. Any particular problem that you are trying to solve that you have code for in one environment and are looking for a Maple routine to solve? It could be that there is already a Maple package to address your needs. Regards, Georgios Kokovidis

Along the lines of Mariners' post above, export as Maple Input (.mpl) will work as well. Both the .mpl and .txt files can be open in a text editor. The difference that I noticed with the .mpl output file is that the actual execution of the commands from the worksheet is not exported, so from a development standpoint, where you can cut and paste from one editor to another, it might be beneficial. This option is not available from the Classic Worsheet Maple 10 interface, only from the Maple 10 interface. Regards, Georgios Kokovidis Dräger Medical

The modification below should return the order as you see it in the Matrix equation from your worksheet. Note that the square brackets return a list, whereas the curly brackets returns a set. There is a lot of info on this forum pertaining to the two, so you can look into it further. >equations:=[seq(lhs(ME)[i]=rhs(ME)[i],i=1..3)]; Regards, Georgios Kokovidis Dräger Medical

At the Maple command prompt, type: >?GenerateEquations and take a look at the help file. I believe this does what you are looking for. It is part of the LinearAlgebra package, so in order to use it you must load it. >with(LinearAlgebra): Regards, Georgios Kokovidis

Careful when using data that is supplied. The answer above is valid if the radius of the earth is 63,000.00 kilometers. I think there is a typo here. The actual radius is 6378.1 km so an approximation as above would be 6,300.00 km. This will change the outcome a bit. The solution methodology stays the same. 14.14 km is what I came up with. Maybe someone can check this for me. Regards, Georgios Kokovidis

The link below has what you are looking for. At the top left there is a Maple symbol that points to a file called "learn.mws". You can right click on this and save the file. Then open it up with Maple and execute. It should be a good starting point for what you are trying to do. http://www.math.montana.edu/frankw/ccp/calculus/deriv/mirror/learn.htm Regards, Georgios Kokovidis