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Hello everybody. I was wondering if I can do this with maple: Consider the ideal

Hello, I have a question concerning PDEs with boundary conditions. Now, I am trying to solve this PDE to get final expression.

> PDE := diff(c(x,y),x,y)+A*diff(c(x,y),x)+B*diff(c(x,y),y)+C*c(x,y)+D  (A,B,C,D are constants)

the boundary condition are

> BC1 := c(0,y)=39;
> BC2 := c(x,0)=39*e^(-x);

Hallo,

I am new with Maple and encountered the following problem.

The following code opens Excel Workbooks (Test1.xls, Test2.xls,...) and stores the values in the
variable data. data is then used to perform a simple operation (second and third for statement),
which calculates curvature.

affine code...

October 30 2008 ys_samson 20

The string below was encrypted using an affine cipher on the 27 letter alphabet
“ abcdefghijklmnopqrstuvwxyz” (there is a space in the 0th position.) Decrypt it.
fmw segjaweoouanerj a ceyqrype aswaheoaqbrqabeafrua eeaojerf afmjeayperjpu

 

I have rearranged a complex impedence equation into the form of a complex number 

z := R*omega^2*C^2/(omega^2*C^2+R^2)+I*(R^2*omega*C+omega^3*C^2*L+R*omega^2*C^2)/(omega^2*C^2+R^2)

(Affine cipher)This phrase follows the the typical pattern in English where there are (almost) as many spaces as words and the letter “e” is also very common. The string  fmw segjaweoouanerj a ceyqrype aswaheoaqbrqabeafrua eeaojerf afmjeayperjpu  was encrypted using an affine cipher on the 27 letter alphabet, there is a space in the 0th position. Can anyone give some hints how to decript it by first solving 2 equations of the form ax+b mod c
 

I am trying to plot the ouput of a procedure as oulined below:

restart:
with(plots):

Hi all,

You will find in the attach worksheet, an example where the solution of an ODE, solve by inttrans, does not agree with the solution of Maple found trough dsolve.  Why they do not agree.?

laplace ODE.mw

thanks in advance

 

Mario

I have an ODE containing different orders of differentiation of f1(x), f2(x) and f3(x).

> with(PDEtools):

> difforder(ODE);

or

> difforder(ODE,x);

gives the order with respect to x but I need a "COMMAND" doing below,

> ODE:=12*diff(f1(x),x$5)^(7/2)*diff(f2(x),x$4)^9+12*diff(f3(x),x$3)*diff(f1(x),x$2)^9;

> COMMAND (ODE,f1(x));

5

> COMMAND (ODE,f2(x));

4

> COMMAND (ODE,f3(x));

3

 

 

incomplete plot...

October 29 2008 Oliver K 1116

Hi,

i have a minor issue with a plot, have a look.

restart:
 f:=x->piecewise(x<-1,0,x<0,-1-x,x<=1,1,0);
 plot(f(x),x=-2..2,discont=true);

Where are the plot lines on the x axis for x<-1 and x>1 ?

 

Thomas

If i use dsolve for solve numerically a ODEs with classical methods, it seems that it isn't possible use the option range=a..b, so for every plot that i want graph using odeplot, i need to integrate the equation! Is there any way to store the results as dsolve do when is used the range option with rk45 method?

I'm trying to get maple to fill in the area where x*z>y^2 and where x*z<y^2. I can get it to plot the graph of where x*z-y^2=0, but I can't get it to fill in the areas where the above conditions are met. Anybody have any ideas?

-Rich

 I have a similar problem to before
I have rewritten a fourth order ODE as a third order ODE with a constant of integration, K. I need to rewrite K as a series K=K0+R*K1+R2*K2+… up to nmax. Then I need to solve by comparing coefficients of powers of R. I have four boundary conditions which are clear from the program below and I keep substituting back into the equation to get a more accurate solution:
 

Hello everyone!

Does anyone know how I could go about splitting a big integer into a sequence of integers of length 3? (e.g., 394737234242 -> '394', '737', '234', '242')

Thanks!

maple to pdf...

October 27 2008 mjason 249

how do i convert/import a maple spreadsheet to a pdf file?

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