Hi all,

I have a function which Maple is happy to integrate from -100 μm to +100 μm,  but won't do between -60 μm and 100 μm.  Screenshot here:

 http://oi39.tinypic.com/34jdif9.jpg

The graph of the function reveals no obvious reason why it shouldn't be able to integrate from +infinity to -infinity (which I'd like to be able to do) and everything in between:

Hi everyone.

I have a system of differential equations with some parameters, and I need to numerically solve for several values of these. How can I do it in a simpler way than solving the system everytime declaring different values for the parameters?

And I need plots and quantities depending on the solution of the system.

Hope I made myself clear.

PS: It's maple 14 by the way.

Using the same post for a different question, also related:

How to solve the  partial derivative at a specified point

The latex code is

f(x,y)=x+(y-1)\arcsin\sqrt{\frac{\,x}{y}}

f''_{xx}(x,1)

Hi,

Is it possible in maple to estimate a density using my own kernel function (Gamma; Beta, Exponential...) instead of the  default kernels ( 'gaussian', biweight, epanechnikov, triangular, rectangular)?

Hallo,
I have to estimate a logistic growth function, with the functional form
f(t)=A/(B+exp(-k*t))
The dataset is given by

X:=[1950,1960,1970,1980,1990,2000,2010];

which describes the values of t
and by

Y:=[2.53,2.76,3.12,3.75,4.2,4.3,4.35];

which describes the values of f(t).
I now have to estimate the values of A,B and k.
I tried NonlinearFit by

with(Statistics):
NonlinearFit(A/(B+exp(-k*t)),X,Y,t);

What do these parameters of Clutch mean,phi_nominal,w_small,k_locked?

And, how can I use them?

Anyone can tell me the detail?

Thank you.

I have something like E1:=y=x*b+z*a+c*i. and i want to solve for y/i. I try doing solve(E1,y/i) but it says i cant solve for an expression. is there a way to get around that?

Hi all.

I want to make a graphical application for a webpage, showing curves with a certain number of points on X axis (about 10 or 15), and some sort of “handles” on curve values (for every curve,...

I have a set of test equations. I am substituting the coefficients of the variables A₁ ..A₄ and the constants in the equations. Most of this I have made work fine. There are 2 coefficients I cand make be substituted. In eq₁ k*d the coefficient of A₃ and eq₅ 3.1d² also the coeff of A₃ .Have tried subs and algsubs but can't make it work. The reason I want to do this is in reality I have 15 equations...

Hi all,

1.msim

I want to compare two signals with relational block in Maplesim, i.e. greater or equal

The output signal should be a pulsed signal which represents the intervals where one signal is greater or equal to the second signal

How to do this

Thanks

It is pretty easy to get the principal value of the logarithm of the imaginary unit, say. Is it just as easy to get all values of the logarithm of the imaginary unit?

Forgive me if this is a duplicate, but I couldn't find a similar questions.

Thanks!

Hello

I am using Maple 15 on a Macbook Pro, and I was using this simple code

   restart;with(LinearAlgebra):
     P := Matrix(4, 4,    [[1, s, t, 0], [0, 1, s, 0], [0, 0, 1, s], [0, 0, 0, s]]);
DiagonalMatrix(Column(P, 2)).P;

which should be easy but then Maple gives me a pop-up message:

"Kernel connection has been lost.  The kernel returned the following error message:

Hello everyone.

I have 2 systems of differential equations which depend on variables from each other, of course the differential variable for each is different. 

Not to get into the details of the system, since they are rather large, the problem is as follows:

I've managed to get with the parameters option a solution for x(z), in essence x(parameters=[a,b])(z). I've managed in turn to generate a procedure that would give me the avg value of x (xm...

Hi,

If I click on the "Edit Startup Code" button, key in "with DEtools;" (sans quotes), save it and close the Startup Code dialog, the "Edit Startup Code" button in the toolbar is filled (indicating startup code).

If I then close Maple and re-open it the startup code is gone.

As I thought that the startup code was for all sessions, I am wondering what I am doing wrong.

Any help appreciated.

regards,
Andrew

Here is the problem:

plot3d(y+2 x^(2),x=0..1,y=0..h(x), axes=boxed) and h(x)=1+sin(x)

what should i do to make it work?

Thanks for help~~