I would like to calcuate the residue of the following expression that I call res

>res:= subs([S1 = C3-sqrt(C3^2+4*C1*s), S2 = C3+sqrt(C3^2+4*C1*s)], exp(s*t)*(S1*(sinh((1/2)*S1)-cosh((1/2)*S1))*(sinh((1/2)*S2*eta)-cosh((1/2)*S2*eta))-S2*(sinh((1/2)*S2)-cosh((1/2)*S2))*(sinh((1/2)*S1*eta)-cosh((1/2...

Hi,

I need to model the MapleSim ground as a hard ground. For example when the robot swing leg hits the ground, it should not have negative vertical position. Basically, the robot will move on a surface.

Thanks...

I would like to find a general solution for a problem. Now, I have written a fonction main(a1,a2,N1,N2) where a1 and a2 are two parametre symbolic, and N1 and N2 are two integers.

the function main(a1,a2,N1,N2)   can calculate every result with a paire of N1,N2 precisely given. but, I need the result for whatever N1 and N2. which means, I need a result in fonction of a1,a2,N1,N2 but not a single answer with N1 and N2 given.

How can I do this? thanks a lot.

Hi

i want to find the eigenvalues of this system of two equations with two unknowns:

2.097*k = .9525000000*k^.35-2.2225*b/k^.65+.2 and

(2.097-2.0955/k^.67)*b = -.2

How i can do this in Maple?

Any help will be appreciated

There seems to exist no such facility with Maple 17, although that was present for Maple 16, 15, ...  and it seemed to be useful. Please explain its absence.

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restart;

read("D:/Poset2/posets2.4v.txt"):

with(posets):

L := chain(2) &* chain(2);

plot_poset(L);

lattice(L);

autgroup(L);

   *    *

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     *

Hello every one,

While plotting contours with grid size [200,200] my computer consume too much time to

execute the commond. To have an idea, the current process which I am running right now already

took 2380.22s and 68.60M and still its on.

Any suggestion to make the contour plot process faster?

Thanks

Hello,

This is more of a tutorial rather than a question because I found some mistakes and because the maple help file was a bit poorly explained and I am posting some additional details.

I am running version 16 of maple and version 7.12 R2011a of matlab.

If some of you are wondering how to call a Matlab user function in Maple this is what I have done:

First of all in the maple...

When I export my plot to PDF, adobe acrobat says: A drawing error occurred. Other programs see my PDF as corrupt. I would use a .eps file, but my plot has a semi-transparent component that doesnt show up very well as an eps. Any ideas?

Thanks

Hi there,

Is there a semi-definite program package in Maple available? I knew there is a SDP in Matlab. Currently I am running part of my program in Matlab then manually export the data to Maple. Which is quite inefficient. I find some paper about that. But I dont know where to download the code. Thanks!

Fei

Solving Helmholtz' equation by seperation of variables yields a solution of the form

(a*exp(I*k_x*x)+b*exp(-I*k_x*x))*(c*exp(I*k_y*y)+d*exp(-I*k_y*y))

if we consider a wave in the first quadrant that is moving away from the x axis then it has the form

c*(a*exp(I*k_x*x)+b*exp(-I*k_x*x))

is it possible to plot this wave in the first quadrant?

Also if I switch to polar coordinates (r,theta) can I produce similar plots of rays?

I recently purchased a new MacBook Pro (retina) with Mountain Lion and found that my Maple 12 programs would not run.  So I updated to Maple 16.  Initially all seemed to work well.  But now when i try to open a Maple .mw file, I get the message

"File acm23test.mw could not be found.  Please select a different file."

What has happened and how can I get my programs working again?

DavidR

Hello,

so I have the following function to be plotted:

M = (1+y^2)/((x^2+1)*(1+z^2))

Anyone have any background knowledge on the above 3D polynomial?  Assuming all 4 parameters are real I ploteed some 3D plots & some interesting surfaces are generated.  I imagine this has some physical application.  If anyone has some knowledge on this please respond & include any references you might know of.

Thanks