Hello.

I'm having serious problems in finding and saving the roots of this equation:

((.642*(-1.*BesselJ(2.250000000*m+1., 0.75e-2*a)+299.9999999*m*BesselJ(2.250000000*m, 0.75e-2*a)/a))*a-10.*BesselJ(2.250000000*m, 0.75e-2*a))*BesselY((9/4)*m, 0.2e-1*a)-((.642*(-1.*BesselY(2.250000000*m+1., 0.75e-2*a)+299.9999999*m*BesselY(2.250000000*m, 0.75e-2*a)/a))*a-10.*BesselY(2.250000000*m, 0.75e-2*a))*BesselJ((9/4)*m, 0.2e-1*a)

a is a eigenvalue...

Hi

I need to insert a legend in a Pie chart, but I want to do it from the command line:

> with(Statistics);
> T := [algodón = 26, lana = 5, tabaco = 7, fruta = 9, arroz = 13, té = 5, carne = 14, otros = 21];
> P := PieChart(T, sector = 0 .. 360, color = ["red", "Orange", "yellow", "green", "ForestGreen", "blue", "MediumPurple", "LightBlue"], captions = relative);
> plots[display](P, title = ["Distribución de las exportaciones...

There is a example "3D rigid slider crank" in the MapleSim examples. Replace the "crank" and the "rod" with flexible beam, turn it into a flexible system, how to do that?

Thank you very much!

I have the following differential equation:

de1:=(v(r)^2*(diff(T(r),r)/(1+T(r)^2)+T(r)/r)-T(r))*(v(r)^2*(diff(T(r),r)/(1+T(r)^2)+T(r)/r)+T(r))=(1+v(r)*diff(v(r),r))*(1-v(r)*diff(v(r),r));

I would like to be able to eliminate T' and obtain T as a function of r, v(r), and v' (and possibly v'').

Is this possible?

Thanks, Geoff

Thank you very much.
 
As you say, the rigid body frame components, can define the end points of the link. But what about "the flexible beam", how to define its endpoint? The "maplesim help"  say "the beam is straight and its neutral axis is aligned with the x axis of the primary frame", then its deformation is measured.  I think in a system, the flexible beam is used together with the rigid body frames, but it always point to the direction of the x axis,...

I am having a problem working with a slider and a plot component in Maple 14. The slider specifies the domain of an animation I am trying to show. Whenever the slider's value is changed, I have code that should change the plot property "play" to "true" so that the animation begins. However, it fails to play the animation. After some troubleshooting, I found that the exact same code works in a Toggle Button component, and I also discovered that the Slider...

If we use numerical approximation to my integral(methods available in Student[NumericalAnalysis] package) the answer will be better or worse? I used simpson method for the my integral and i want you to compare this answer with the direct answer that we reached in the last comment..thank u so much

the first answer is the direct answer, and second & third answer is the use of simpson rule withh the numerical methods.which answer is better?

Hi there. I have two expressions of type Matrix(7x1), one I entered directly and the other one is the result of a  procedure calling. They only differ by the term [1,1], so when I do a comparation of the appropiate submatrix using Equal I get a positive answer:

>Equal(SubMatrix(atataaV(1,1,1,1,u1),2..-1,1),SubMatrix(u1,2..-1,1));

true

Now, the elements of the submatrices depend on the symbol 'n',...

I'm brand new to Maple. How can I plot the Gammafunction with real numbers (not in N and C)?

I can only plot the Gammafunction in the complex plane by using the following:

with(plots);

f:=z->GAMMA(z);

complexplot3d(f);

Is it also possible to plot the Betafunction B(a,b):=int(t^(a-1)*(1-t)^(b-1),t=0..1) in such a way that I can assign special values to a and b?

These solutions will help me so much....Thank you for your answer!!!

For example, the simple pendulum length changes by the law

l = l_0+a*t

where a - constant, t - time, l_0 - link length at t=0.

How it is possible to model such system? Is it possibly to change r_XYZ in Rigid Body Frame under this law or it is necessary to go by another way?

Hi,

I have got few quick questions once i have gone through the features of MapleSim connector and here are they.

• Can we use the S-function created by MapleSim with Targetlink
• If I am doing the HIL simulations, how does MapleSim take care of solvers. Do we need to write the device drivers and tlc files or the tool takes care of it.
• How do I go about doing HIL simulations if my model is discrete.

Would appreciate if...

I often run into this problem. Say I have defined a new variable in terms of some old variables:

     Eq1 := NewVar = OldVar1 + OldVar2

Then suppose I have an expression in terms of the old variables:

     Eq2 := OldVar6 * OldVar5 = OldVar3 * (OldVar1 + OldVar2)

If I want to substitute Eq1 into Eq2 I have to either type

     subs(OldVar1 + OldVar2 = NewVar1, Eq2)

or I can do this