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!!!

When i input something like sqrt(30) I just get back 30 with a square root symbol over it. How can I make maple evaluate it?

How do I generate a gaussian random matrix (2x2).

Is this the default setting already in maple or is there code I need to use?

I'm to generate a random matrix ie > with(LinearAlgebra); > RandomMatrix(2, 2, generator = -1 .. 1); and find the eigenvalues of each matrix ten times. How do I put random Matrix in the for loop with Maple?

I have two vector here

X:= vector([-1,0,1])

Y:=vector([1+I*2,3+I,4+3*I], datatype=complex)

I want to fit them in the form a*exp(-I*10*t)+b*exp(I*10*t), a and b may be complex.

How should I do?

I have two vector here, and I want to fit them with the form a*exp(-I*4375*t)+b*exp(I*4375*t), a and b should be complex. How should I do?

X := Vector([-0.000163, 0, 0.000163], datatype = complex);

Y := Vector([-8.84352*10^(-13)+(I*1.71511)*10^(-12), 1.49867*10^(-13)+(I*1.45355)*10^(-12), 1.15763*10^(-12)+(I*9.08261)*10^(-13)], datatype = complex[8]);
 

 

Dear all,

I am trying to built in 3d function of recurrence relation

V(i)=a*V(i-1)-V(i-2); a=const; initial conditions: V(i-1)=-1; V(i-2)=-2.

An axes of a three-dimensional surface have to be: V(i); V(i-1); i.