I like the access to colors and pen size at the top of the drawing canvas.  But when I re-open a file that has a canvas, all the pen work reverts to the smallest width.  I tried opening the same worksheet in version 11 and the width of the pen was preserved; so the information must be in the file.  When I change the width of lines and arrows, that change is saved.

 

I am on a OS X 10.5.  Is this a bug or a feature?

Concrete example: Suppose I have two (2 x 2) matrices that have entries as operators or other non-commutative object.

In the following example Maple treats the entries like numbers:

with(linalg);

R:=matrix(2,2,[R11,R12,R21,R22]);

X:=matrix(2,2,[A,B,C,D]);

Res:=multiply(R,X);

How can I ensure that these are not commuted like ordinary numbers?

The second part of the question, is how I can also prevent arbitrary application of associativity if I so choose.

How do you smooth a frequency plot?

Hi,,

Here is what I am doing outside a proc()

When I do a boxplot, the x- axis is as wide as the boxplot. 

How do adjust the x-axis so the boxplot is say .25 units wide and the x-axis extends to 5?

Good morning, I've tried to solve this pd-eqn with pdsolve, but there is no output (not solution nor error) and the promp goes on the next row

 

I have installed Maple 11.02 on Vista.   I opened up a .MW file the print quality is awful.   I zoomed into to higher magnification and even at 400% the text is very grainy (but very large).

I imagine there is some setting to control the rendering of fonts.

How do I make it render on screen nicely?

As it is right now I very quickly get eye-strain looking at it.  It's awful and unusable as is.

Here is my worksheet code:

> f := theta -> (a*b)/sqrt(a^2*(sin(theta-Pi/4))^2+b^2*(cos(theta-Pi/4))^2)+c*cos(4*theta);

(1) ...

> simplify(f(theta));

(2) ...

 > subs(sqrt(a^2*(cos(theta+Pi/4))^2+b^2-b^2*(cos(theta+Pi/4))^2)=tmp,simplify(f(theta)));

(3) ...

I recently asked about HTTP Requests and found out it could be done with either a Socket or with the HTTP package. The reason I asked is that I would like to connect to Blackboard (Course Management System). I would like Bb to launch a Maple worksheet or maplet and then Maple to be able to insert grades into the Bb gradebook. Does anyone know how to do that?

Dear colleagues, please help me to animate a pendulum motion, L i s the length of the pendulum,  the differential equation is:

de := diff(theta(t), `$`(t, 2))+c*(diff(theta(t), t))+9.8*sin(theta(t))/L = 0; c := 2; L := 2;
init := theta(0) = 0, (D(theta))(0) = 0;
sol := dsolve({de, init}, theta(t), numeric);

_EnvAllSolutions := true; solve([((1/24)*sqrt(1/11*(819+210*sqrt(5)-126*sqrt(11)-90*sqrt(55)))*cos(sqrt(2/5*(7-2*sqrt(11)))*t*tau/h)+(1/8)*sqrt(1/33*(273+70*sqrt(5)+42*sqrt(11)+30*sqrt(55)))*cos(sqrt(2/5*(7+2*sqrt(11)))*t*tau/h))^2+(-(1/8)*sqrt(1/11*(91+39*sqrt(5)-2*sqrt(22*(47+21*sqrt(5)))))*sin(sqrt(2/5*(7-2*sqrt(11)))*t*tau/h)+(1/8)*sqrt(1/11*(91+39*sqrt(5)+2*sqrt(22*(47+21*sqrt(5)))))*sin(sqrt(2/5*(7+2*sqrt(11)))*t*tau/h))^2 = 1, t > 0, h > 0, tau > 0], t)

 

Hello fellow digitheads, I'm running the spanking new Maple 12 and I would like to graph the rather harmless expression for wave motion a sin(x - v*t) When I type it in and bring up the Plot Builder assistant it gives me the option (among many) of making one variable the animation variable and the other two "slidable". When I hit "Plot" an "Interactive Parameter Maplet" pops up where I can slide the value of those parameters while it cycles through the animation.

Is there a way for Maple to make GET or POST HTTP requests?

If there are no direct Maple commands, has anyone written a package to do this possibly on top of the Sockets package?

Phil Yasskin

Just wanted to look at a worksheet in the Maple Application Center and had to jump through a lot of hoops to do that.

Is it really necessary - to sign in with my email and password, and with title "I am a Maplesoft Member" over, so it looked as if I signed that I am a Maplesoft member. In what sense? 

If I use Windows and Adobe Reader, does that make me a Microsoft and Adobe member, too?

Alec
(could I add a "Maplesoft member" in my signature?)

Hi all, im just starting with maple, mostly teaching myself how to code, but as you can see, i require some assistance.

ok, so, the basis of this program is to recreate the chaos game, check-out wikipedia if you want to know more, the chaos game is a basic and easy way to make the sierpinski triangle.

my problem is getting multiple plots on the same graph (see my code below)

the plots are in a loop, so each time the loop executes, a new point will be plotted on the original graph (the one right at the beginning that makes a triangle.