When I run the following Maple codes, for some reason I get an error:

> restart:with(DEtools):with(plots):

> ode:= diff(p(t), t) = r*(1.5-sin(2*t))*p(t);

> odePlot := DEplot(ode, P(t), t = -3 .. 3, P = 0 .. 1000);

Error, (in DEtools/DEplot/CheckDE) derivatives must be given explicitly

I'm not sure what it's talking about? I feel like I've done things like this many times in the past. Any help...

Friends,

I am very beginner of Maple softs, in order to proceed with my project i need to model a simple Human Knee joint and  to do its simulation, Somebody please help on this, otherwise i cant able to proceed with my project.

Waiting for a solution

Vinil

Hi!

Exuse me, can somebody help me???

Maple kills my very important work. I work with Maple 13 and wrote big scientific programm.

I restart my computer, when i try to open file, which works normal yesterday, i saw something like this:

//   How do yo want to open this text file? //

Maple text     Plain text    Maple input   Cancel

Everything i try - no result,...

Hello,

I use the fellowing commands to get the figures which I want to insert in a microsoft word document.

sys3 := NewSystem((4*s^2+64*s+224)/(s^4+32*s^3+304*s^2+896*s));
BodePlot(sys3);

But the figures are too big. I want to change the figure size by using some commands, namely, make the figures smaller, but don't change the frequency (x-axes) and magnitude/phase (y-axes) of them. So after size-modifying, the figures can be inserted in a word document properly.

Hi

I'm trying to find the argument (or phase) of the following expression:

where r,d, and t are all positive real numbers. w is also a real number (although could be negative).

Can anyone give me hints as to the best way to do this in Maple? Thanks for thinking...

Hello, MaplePrimes!

I want to create a custom component to model dynamics of a movable pulley, which can rotate and move along some direction (translational motion). I’ve got dynamic system, which describes both motions of a pulley. Some information about this dynamic system:

Hi,

I need to find the eigenvectors of this matrix and get the following error:

> eigenvects(A);
 linalg:-eigenvects called with arguments: [[200, -96, 5, -4.4, 4.7, -12.6, -6.2], [-96, 320, 33.1, 6.8, 4.5, 7.4, -.3], [5, 33.1, z, -51.1, .8, -8.4, 7.6], [-4.4, 6.8, -51.1, 110, -76.6, -14.2, -67], [4.7, 4.5, .8, -76.6, 270, 78.3, -.1], [-12.6, 7.4, -8.4, -14.2, 78.3, 420, 38.3], [-6.2, -.3, 7.6, -67, -.1, 38.3, 230]]
 #(linalg:-eigenvects,7...

Hello

Im trying to get maple to solve trigonomic equations in a specific interval but having trouble solving e.g. cos(t)=tan(t),t in [0;2 Pi].

I can solve for the general solutions with solve(cos(t)=tan(t),AllSolutions) and use isolve to specify the interval but this only works for some equations. Can piecewise be used in some way or have i missed a basic function in maple as with ti89 or ti inspire i can easily find the solutions?

Any one got any ideas how I can prove that eq1:=-sinh(sqrt(mu)*X)/(X*sinh(sqrt(mu)))+1 is identically equal to eq2:=sum(2*(-1)^(n+1)*sin(Pi*n*X)*mu/(Pi*X*(mu+n^2*Pi^2)*n),n=1..infinity), where 0<=X<=1, mu>0?

If I plot the difference between the two I get ~0, and if for example I set X=0.5, mu=100, then eq1-eq2=0.  But I can't for the life of me figure out how to prove the two are mathematically identical?

I solved a larger problem using two different...

Hey all you clever people

I have been leaning simulink in school today. The problem is that i like maple, and would like to solve all my problems in maple

The problem we solved i attached in a zip file.

Can anyone make a simulation in maplesim, that does the same, and mail it to me?

Looking forward to hear from you

Rune Behnk Eriksen

How can Maple be use to find cosets of S6. I there a list of codes and examples.

Regards,

I have a very large equation which has an arctan(x,y). I need to be able to extract the arguments x,y and assign them in some variables.

I have tried the solution given here.

Unfortunately, that solution only works for constants, not equations.

For example, if I use the proc given in there with arctan(10,11) it works. But if I use something like arctan...

Hello.

I have following equation a = X.b, where a and b are n-dimension vectors, X is unknown nxn-dimension matrix. How can I find matrix X?