(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

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!

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

How do I find the equations of all tangent lines (of a function) passing through a point that is not on the graph of a function? I am completely clueless, any help would be apprechiated ! THANKS

(I'm using Maple 11)

I tried using the Maplet Builder in Maple 12, and also looking up some links in the Maple Help section but found it rather confusing. Are there any particular sections in Maple Help or on the Internet that are helpful with Maplets, cause there are so many.

I need to create a maplet in which the user inputs the angle of entry, the angle of emergence, and the wavelength of a light ray entering a transparent block.

Also need a model/diagram of the result with the appropriate angles.

Hi all,

Write a procedure rsum that sums the reciprocals of the elements of a list.  So rsum( [a,b,c] ) should return 1/a + 1/b + 1/c.

How would i modify my code so that it does this... I know theres a much simpler way (rsum := L -> add( 1/x, x in L ):) but i would like to know how to edit the one ive done.

Heres my code so far...

rsum := proc(L)
local n;
    for n in L do
      1/n
    end do;
end proc;

I would lke to know how I can make multiple 2-d pointplots; the pointplot only seems to work for one plot, but I could be wrong... . Tony Lawrance