Hallo,

I would like to create a literal subscript using a mac and international keyboard.

Unfortunately the symbol on the expression palette does not work so I need to use a keyboard shortcut. I have been searching the internet and maple help for hours, but I cannot find it. What I did find is:

http://www.maplesoft.com/support/help/AddOns/view.aspx?path=worksheet/documenting/2DMathShortcutKeys

Hi all,

Is there a way to call Eigenvectors(), order the returned eigenvalues from largest to smallest, and have the returned eigenvectors reflect this ordering? I've tried a sort() on the eigenvalues which orders them successfully, but I can't seem to figure out how to apply the ordering changes to my eigenvectors.

Hi all,

I am trying to substitute 2 solutions from each loop into a general matrix but i cannot do this.

 

File attached.

 

Thank you,View 11295_loop pra.mw on MapleNet or Download 11295_loop pra.mw
View file details

How do I calculate the derivative of C(r,t) with respect to r evaluated at r=a? I can do it in multiple lines like this:

temp:=diff(C(r,t),r);

r:=a;

R:=temp;

r:='r';

But this is a pretty ghetto way of doing this, how do I solve for R in one line? I thought diff or D could do it but I can't seem to get the syntax right :(

Thanks.

From the program below

Hi everyone!

I am part of a team managing a multi-user network at a mathematics institute in erlangen. 

We are working with Sun Solaris 5.10 and have got a problem plotting with plot3d(plot works fine though).

Any 3d plot results in a black screen. When I resize the plotting frame, the plot gets visible, but it immediately returns to a distorted black frame, when I release the mouse button. Updating the display on the rays doesn't help at all.

Have you any ideas how we can get Maple to plot  regularily?

Thank you and best wishes!

I have been using MapleNet for several years mainly on Linux.
But I usually use Mac for daily research and education.

I wonder why MapleNet is not compatible with Mac OS X.
MapleNet runs on Tomcat since ver. 11 and it should be run
on Mac OS X with Tomcat. However, there is no installer
for Mac !

I would love to ask Maplesoft to support Mac OS X for MapleNet.
webMathematica is fully compatible with Snow Leopard !
http://support.wolfram.com/technotes/snowleopard.en.html

Please...

Dear all,

 How How to plot curves family in one picture in Maple? For example

the curves family are y=a*x^2+5 
with a={4,8,12,16} 
and  x is in the region [-5, 5]

Thanks

Greetings all restart; f := x->x^4: assume(n::integer): an := 1/Pi*int(f(x)*cos(n*x),x=-Pi..Pi): FaN1 := sum(an*cos(n*x),n=1..N); FaN2 := Sum(an*cos(n*x),n=1..N); On Maple 13, FaN1 and FaN2 are very different representations of this series. However, on Maple 11 they are the same (same as FN2 on Maple 13). How can I persuade Maple 13 to convert FaN2 to FaN1 ? Also, how can I persuade Maple 11 to convert aFN1 to FaN2 ?

given this equation: f(x,y) = (xysin(x-y)) / (1+(x^2)+(y^2)) , for (1,1,0) i need to compute the partial derivatives and graph the surface and the tangent plane at the given point. this is as far as i got before getting stuck > f := xysin(x-y)/(1+x^2+y^2); xysin(x - y) ------------ 2 2 1 + x + y > plot3d(f, x = -3 .. 3, y = -3 .. 3, grid = [2, 2]);

restart; with(DEtools) x1 := diff(x(t), t) = (4-x-4*y)*x; y1 := diff(y(t), t) = (4-4*x-y)*y; phaseportrait([diff(x(t), t) = (4-x-4*y)*x, diff(y(t), t) = (4-4*x-y)*y], [x(t), y(t)], x = -20 .. 20, y = -20 .. 20, t = -2 .. 2, [[x(0) = 0, y(0) = 1]], stepsize = 0.5e-1, scene = [y(t), x(t)], linecolour = sin((1/2)*t*Pi), method = classical[foreuler]) I'm trying to specify the domain for x and y but I receive the following error Error, (in DEtools/phaseportrait) initial conditions must be specified in inits The above works when I get rid of x = -20 .. 20, y = -20 .. 20,

 How do I get both branches (i.e. positive and negative values) for f(x) on the same plot of f(x) = x^(1/2)?

 

Thanks very much,

Greg

Hi,

I have a frustrating error that comes from using Code generation with diff

It works fine when processing a single equation but doesn't like matricies:

> Xx := ((cos(q1)*cos(q2)+0.8e-3*sin(q1)*sin(q2))*sin(q3)+(0.8e-3*(-cos(q1)*sin(q2)+0.8e-3*sin(q1)*cos(q2)))*cos(q3)+sin(q1)*cos(q3))*L3+(0.8e-3*(cos(q1)*sin(q2)-0.8e-3*sin(q1)*cos(q2)+0.8e-3*sin(q1)))*L3+sin(q1)*(L21+L22);

I would like to calculate engineering stress using array; but the following piece of codes do not seem to work. *EngineeringStress = force / area *Define force is an array of measurements of force. crossArea:= 3.2 * 19.1 (not the "*" is really a "." in Maple editor; it is multiplication) force := array ([0., 1380.0, 2780.0, 5630.0]) engineeringStress := force/crossArea; engineeringStress[1] ({0., 1380.0, 2780.0, 5630.0}/crossArea)[1] it suppose to be 0!!!