I'm pretty new here, in maple and I think I'm not very good in math too but I would like to discover how to limit or set the domain of my x.
Example:
sin(x);
I would like to set the type of the x to N (natural) and the type resulting to R (real).
But after hours and hours of searches on google I subscribed to ask this to you, gentlemen :P
Thank you everyone

Hi,
I am interested in making the assumption T[0]<><><><><>

Bonjour,
Je voudrais modéliser le vol d'une fusée à eau sous maple 11, je n sais pas par ou commencer.
Merci d'avance pour votre aide.

Hi,
I am trying to create a sheet to show the derivation of 2nd and 4th-order function derivatives as part of a 5-point finite difference scheme for a 1-D model (a continuous beam on an irregular foundation). I have isolated 2 simultaneous equations by using Taylor polynomials and would like to cast these in matrix form and then solve for each of the D-operators symbolically. Is there a simple way to do this or do I have to work with the ops manually?
thanks for any help,
Neil

I have difficulties understanding why exactly Maple finds the question difficult to answer.
First attempt:
assume(a>0); a:=sqrt(b^2); eval(a, b=2);
(1/2)
/ 2\
a := \b /
(1/2)
4
I suppose the problem is that after the assignment Maple forgets the assumption a>0(?). Is there a way to make _real_ assumptions on variables, which Maple will not forget and possibly warn me if I try to violate?

Dear All,
I have two odes,
dX/dt = -X(t)*Y(t) and dY(t)/dt = X(t)*Y(t)
I can solve these numerically using the following code:
```
eq_1:=diff(X(t), t)=-X(t)*Y(t);
eq_2:=diff(Y(t),t)=X(t)*Y(t);
IC:={eq_1, eq_2,X(0)=10,Y(0)=1};
F:=dsolve(IC, {X(t),Y(t)},type=numeric, method=rosenbrock);
h := theta->eval(X(t),F(theta));
h(1);
```

However, I would like to add perturbations at specific time points. For example, at t=10, set X=5, or at t=15, Y=0. How should I do this in maple?
Note: my actual situation involves a 100 odes.
Thanks,
Colin

How can I write a recursive algorithm on maple wich gives me the fibonacci polinomies knowing that:
F1(x) = 1
F2(x) = x
Fn+1(x) = xFn(x) + Fn−1(x), n = 2, 3, ...
i think it's easy but still can't do it...if anyone knows help me please

I subs (a^2=4b, expression) and get
(1+b)*x^2+a*(1+b)*x+b(b-1)+2*b
visually, (b+1) is a factor of the polynomial but the machine refuse to recognise this, I tried /(b+1), collect, expand and simplify and all failed.
This is quite a frustration to new user who just want to get things done quickly!

Hello, everyone!
Given a polynomial:
f := x^2*y + 10*z*w + 2*a*t
I would like to know how many different variables appear in f. Is there a command I can use to do this?
My actual polynomial is more like:
f := x[1]^2*x[2] + x[127]*x[3] + ...
Any help would be appreciated!
Thank you very much, and happy holidays!
Best,
Susan

I am new to the Maple v.11 world and trying to figure out how to do things. I'm getting lost with the instructions in the help screens.
Here is the problem: Can somebody show me how to enter this into Maple.
Find the probability of an observation falling within one standard deviation of the mean. A Poisson distribution with [lambda]=16.
Two other questions are normal distribution with mean=20, and a gamma distribution with [alpha]=4 and [theta]=5.
I'm sure that if I can figure out one of the problems, I can figure out the others. Somebody please show me how to enter the problem

Hi I have data I want to fit it I do not know the model function I know only that the relation between X and Y is non-linear and there is six parameters I want to know their values from the fitting.can I do this using Maple or it is impossible.
this is Maple work sheet:

Download 7089_X0165.txtView file details
this is the input data:

Download 7089_Nonlinearfit.mwsView file details
Is it possible to execute an **fsolve()** for the equation as given below? I have not been able to get it to work thus far. Thank you for your support.
Excel cell formula:
=Maple("fsolve(2*(2*EllipticE(&1)-EllipticE(sin(beta),&1)-EllipticK(&1))+2*EllipticF(sin(beta),&1)=tan(beta)*sqrt(1-&1^2*sin(beta)^2),beta);",I14)

I have looked around and can't seem to find anything. Something simple that would provide the number of days eleapsed between two date/times. This comes in handy for radioactive source decay calculations.
Thanks,
GL

I just started using maple I want to count such thing:
( sum {from j=1 to k} ( x_j - b ) - sum{ from i=1 to n}( y_i - b) )^2
It's a part of longer equation. As a result I need a formula not a value.
It is possible to count it with a build-in maple command? I have problems with writing the sum. If not could someone give me a tip how to write a program?

Hi,
I need to find the domain and range for x=(1/5)*e^(y/2).
How do I do that in Maple?
Thanks!