Take a look at the help page for functional operators. At the Maple prompt, type ?-> and hit enter: >?-> In your example, x and Xo are two separate variables. F:= x -> (Xo^5) + 3*((Xo)^2)+1; will define the function with respect to x. Then >F(Xo); will return -19 as you would expect. Hope this helps to clear some things up for you. Regards, Georgios Kokovidis Dräger Medical

Unlike your calculator, Maple returns exact symbolic answers. You can get the numerical approximation of the exact answer by asking for it. There are other more direct ways to do this as well. >with(VectorCalculus): >ArcLength(,t=0..Pi); will return an exact symbolic answer as you have above. You can get the numeric approximation by calling evalf. >evalf(%); 3.820197789 Another way to do this, without calling evalf would be to give the range value a floating point range. The line below replaces the 0 in t=0..Pi with 0.0. This forces a numeric solution directly. >ArcLength(,t=0.0..Pi); Regards, Georgios Kokovidis Dräger Medical

From a previous posting: http://beta.mapleprimes.com/forum/how-do-i-take-only-positive-root-from-solve-polynomial-x Regards, Georgios Kokovidis Dräger Medical

> 1.234*5; 6.170 > 6.17/5; 1.234000000 > a:=%; a := 1.234000000 > a; 1.234000000 Regards, Georgios Kokovidis Dräger Medical

Take a look at the "combine" command: ?combine >restart: >expand(sin(2*x)); >combine(2*sin(x)*cos(x),trig); Regards, Georgios Kokovidis Dräger Medical

The steps below will put your equation into "Standard Form", where the left hand side equations are equal to 1 on the right hand side. The Classic Interface of Maple 10 was used. >restart:with(student): >hyperb:=9*x^2-y^2-72*x+8*y+119=0; >step1:=completesquare(hyperb,{x,y}); >step2:=lhs(step1)+9=rhs(step1)+9; >step3:=lhs(step2)/9=rhs(step2)/9; Regards, Georgios Kokovidis

This is not possible as far as I know. You want to be able to select from a palette of objects and drag them into the workspace and see them appear, and possibly show the code necessary that made them. Does this sound right? If so, then it is not possible. Maybe in a future version. To create a cuboid, with a minimal of code, look at the plottools package. You can cut and paste from the examples into your own worksheet. This will give you greater flexibility to manipulate the cuboid into and size and color that you wish. >?plottools >?plottools[cuboid] Regards, Georgios Kokovidis Dräger Medical

You can use fsolve with a range to return only the positive values of your polynomial. >evalf(solve(x^2-5 = 0, x)); 2.236067977, -2.236067977 >fsolve(x^2-5 = 0, x=0..infinity); 2.236067977 Regards, Georgios Kokovidis Dräger Medical

I answered a similar question a while ago. Take a look at the link here. Regards, Georgios Kokovidis Dräger Medical

On a Windows machine, if you unzip the files to a local directory on your drive, in my case c:\temp\Maple\FourierSieries, you can add this path statement to the beginning of the worksheet to include the library. >restart: >libname:=libname, `c:/temp/Maple/FourierSeries`: >with(FourierSeries); Then, if everything works as intended, you should see this below the statement with(FourierSeries): [`*`, `+`, `-`, `/`, Add, ChangeBasis, Coefficients, ConvertToSum, Copy, Create, Degree, Derivate, Evaluate, FOURIERSERIES, GetFourierSeries, SERIESORTHOGONALSYSTEM, ScalarMultiply, SimplifyCoefficients, Truncate] Regards, Georgios Kokovidis Dräger Medical

You can control the seq step with an extra parameter. Look at the help file for seq for more details. Take a look at the statement for g:=... and you will see a 0.2 after the 13. This determines the step size. >?seq >restart:with(plots):with(plottools): >screw:=[seq(plot3d([a*cos(x),a*sin(x),3*x],a=-20..20,x=1..4*Pi,numpoints=1000,orientation=[i,60]),i=-30..30)]: >tube:=[seq(implicitplot3d([x^2+y^2=40,z],x=-15..15,y=-15..15,z=1..12*Pi,color=green,orientation=[i,60]),i=-30..30)]: >g:=[seq(sphere([15*cos(i),15*sin(i),3*i],1),(i=1..13,0.2))]: >p3:=display(g,insequence=true): >p1:=display(tube,insequence=true): >p2:=display(screw,insequence=true): >display(p1,p2,p3); Regards, Georgios Kokovidis Dräger Medical

Take a look at the options for the DEplot command by opening the help file: >?DEplot Then scroll down the help page until you see the list of options available. You can use them with dfieldplot. Especially the "arrows=" command. Setting it to large will give the arrows a different look and feel. The two commands listed above from your example are from two separate packages, so they do not have the same list of options available to them. One is from the plots package and the other from the DEtools package. Hope this explains the reason why one works and the other does not. Regards, Georgios Kokovidis Dräger Medical

>restart: >eq1:=(5/2)*sin(2*x)/cos(2*x); >subs(sin(2*x)=tan(2*x)*cos(2*x),eq1); Regards, Georgios Kokovidis Dräger Medical

Cut and paste the code below into your worksheet and execute to see the results. >Int(4/x,x); >int(4/x,x); >Int(sec(2*x)^2,x); >int(sec(2*x)^2,x); >Int(5/x,x=2..3); >int(5/x,x=2..3); >evalf(%); Regards, Georgios Kokovidis Dräger Medical

Take at look at the AudioTools help page. This is supported in version 10. I do not know if earlier versions have this. >?AudioTools[Read] Regards, Georgios Kokovidis