Hi,

Maple 13 here. Is there a tutor which gives you a step-by-step solving process for linear 1st and 2nd order ODEs (similar to the one for Calculus/Integration Methods) ? I have been disappointed in not being able to find this, unless I am missing something.

thanks,
Andrew

The problem

Back in 1996 I was working for the Symbolic Computation Group at the University of Waterloo, developing algorithms and code...

Good Afternoon.

I have a problem with that project, because the when i move the dial (DialKp1) the component Mathbase don´t update the lat change.

I don´t know how can i do for updating it?

23-06-2011-modelo_di.mw

Hi Experts,

Here is my File. I use the DirectSearch2 Library.

Searching the Minimum works fine. (800 sec on i7 PC)

But the Datafit runs endless.

I tried to make the fit with min SSE that works, but why does DataFit not succeed?

Thanks for answering.

Walter

GroundWater_Solution.mw

Hello Everybody

for Solving a parabolic Inhomogeneous  PDE, I used the Green's Function,

I tried to simplify the Inhomogeneous term, But still can not calculate the answer.

this is my file : W111.mw

Please HELP !

I like the pretty print of maple, and I want to print the output to a file instead Maple document (if it could be, print in both of 2).

For example:

exprs := [ (a*x + b)/sin(x) = 0, (a*x^2 + b*x + c)/(d*x + e) = 0 ]:
print~(exprs);

And my output text file may be somthing like this:
                          a x + b    

As an exercise to find the solution of this equation,

         (a^(x+2))^(1/3)  =  (a^(x-5))^(1/2)

Maple 14 and 15 provide no answer, which preceding releases found to be x = 19,

but complain about a "numeric exception: division by zero"!

     Is that progress with Maple?

> r= r*cos(theta) + r*sin(theta);

le the ODE, ode.

> G=6.67 * 10^(-11);

> F1=(m*a);

> F2=(-G*M*m)/(abs(r^(3)));

> solve(m*a)=(-G*M*m)/(abs(r^(3)));

11_1_eng.mw This Maple worksheet Ukrainian students have downloaded 84.581 times a week. ("ZNO")

> with(DifferentialAlgebra:-Tools);
Error, `DifferentialAlgebra` does not evaluate to a module
with(DifferentialAlgebra):
> with(DifferentialAlgebra);
Error, invalid input: with expects its 1st argument, pname, to be of type {`module`, package}, but received DifferentialAlgebra

don't know why maple 12 give these error, how to import differentialalgebra package?

I was warming by Maple that:

Warning, Exception in unload function 'free': Error, (in _free) invalid dictionary ID

What is it? I have no information about this warning.

I would like to calculate the power series solution of a set of ODEs. However, I know that this power series will contain non-integer coefficients, which are dependent on a (rational) parameter of the system, α. I'm solving the ODE by power series in the usual way, that is, by defining each of the solution variables as a function with the first few terms of their power series (with unknown coefficients), substituting these into the ODEs, and finding a series of the ODE which should be of the form:

Hi All,

I am trying to solve set of equations after applying boundary conditions.  There are 4 coefficients which I have to find by solving following 4 equations;

I tried to solve using the command solve({A, B,C,D},[E,F,G,H]), but it just returns [],  does anyone know which command to use for backward substitution of coefficients.  Also if I try to solve it separately, it says "recursive error"

Your help will be appreciated

Thanks

I opened one of my worksheets this morning and started executing it using the ! tool. When it came to the first plot command, it replaced the previous plotted output by the following:

1 ************                                                                
  +          **********                                                       
  +                   ******                                                  
  +                         *****A...

Hello everybody

I need to simplify (or even approximate ) a huge expression which is a two-variable function of x and t,

including  SinCos and Exp. ( it's length is like 10 pages ! )

I tried everything but nothing worked.

Please HELP !

it starts like this:

Q(x,t):=