Suppose the adjacency matrix M is given. How we can get the graph of it from Maple? Can we draw the graph now? Thanx.

can I change the behavior of maple to not represent 1/sqrt(2) as sqrt(2)/2? I guess in a mathmatician's view this is a simplification, but not from an engineering standpoint. also, if I perform combine(sqrt(2)/(sqrt(m)*sqrt(k)),radical,symbolic) I get sqrt(2)*sqrt(1/m k) instead of the desired sqrt(2/(k*m))..is this related? I'm sure there is a nuance that I am not getting...

i am trying to plot a moving particle on two separate sphers of different radii. i have the code: restart: > with(plots): > with(plottools): > p1:=plot3d([3*sin(u)*cos(v),3*sin(u)*sin(v),3*cos(u)], u=0..Pi, v=0..2*Pi,color=red, > style=wireframe,axes=normal,scaling=constrained): > p2:=plot3d ([2.9*sin(u)*cos(v),2.9*sin(u)*sin(v),2.9*cos(u)], u=0..Pi, v=0..2*Pi,color=blue,axes=normal,scaling=constrained): > p3:=display(p1,[seq( pointplot( { [3*sin(u)*cos(v)(k/50)(n/50),3*sin(u)*sin(v)(k/50)(n/50),3*cos(u)(k/50)(n/50)],[2.9*sin(u)*cos(v)(k/50)(n/50), 2.9*sin(u)*sin(v)(k/50)(n/50),2.9*cos(u)(k/50)(n/50) ] } ) , (k,n)=(0..314,0..314) ) ],insequence=true):

If i have a sequence of r[i+1] = 2r[i-1] + 3r[i] (where [i] represents subscript i) how do I use the 'do' function to go from the point where initially r[i-1] is, for example, 3 and r[i] is 4 to the point at which r[i-1] is first greater than 300 and find r[i+1] at this point. I hope this question makes sense! Thankyou

Have spent much of the weekend reading the maple help files and googling but still haven't found a current way to do this on XP with v9.5. Tried editing the maple9.5.ini file to point to the folder, but it doesn't work and seems to behave more like a log file. I can use libname as a line in the worksheet but would prefer to do without as I use the modules a lot. Any suggestions would be welcome. Neil

How do I plot f(x) in the following question? f:=x->sum(h(2^n*x)/(2^n),n = 0 .. 20) h(x)={ 2x , 0<><>

is there any way to do quantum field theory on maple 11 even if it means to have an add on package? answer will be helpful

How can I evaluate the eigenvectors of a 2x2 Matrix with trig functions as entries? This is what I did: with(LinearAlgebra): K:=<<cos(theta)|sin(theta)>,<sin(theta)|-cos(theta)>>; Eigenvectors(K); Error, (in LinearAlgebra:-LA_Main:-Eigenvectors) expecting either Matrices of rationals, rational functions, radical functions, algebraic numbers, or algebraic functions, or Matrices of complex(numeric) values I'm wondering why cos(theta) shouldn't be an algebraic function ?? Assuming theta to be real I get the same.

In a previous blog entry I described a novel method, proposed by Robert Israel, for sorting a list of lists of small positive integers, specifically those less than 256. It is significantly faster than the usual method. Roman Pearce responded with a method for rapidly sorting listlists of integers (a listlist is a list of sublists with identical number of elements), regardless of size. While not as fast as Robert's technique, it, too, is significantly faster than the usual method and has no restriction on integer size.

How can I plot some velocity vectors on a circle. the function of velocity vectors is (1+cos(t))i+(sin(t))j thank you very much

So, why are we given two ways of defining a function, one using " := " and the other using " -> "? The latter seems pretty clunky. What use is it?

There is an icon in the Expressions pallete for "eval". Why isn't there one for "algsubs" which seems to be far more useful than the "eval" command. Or maybe I've missed something.....

I would like to animate a function and its derivative together in a sort of trace feature like you can do on a TI calculator. I am unsure if this is even possible, was wondering if someone else has done it or has any ideas... Thanks in advance, Brandon

I would like to be able to code boundary conditions of the following type: u[x](0,t)=0 and u[x](1,t)=4 where u[x] is differentiating u with respect to x. I can code for non derivative boundary conditions using a for loop. Is the process similar? I have tried to find some examples on the internet but can't find any.

I follow the instructions in the User Manual section 5.2: Dragging to a Plot Region To use the drag-and-drop method, use the plot region created by one of the other methods or insert an empty plot region into the document. Empty plot regions can be two-dimensional or three-dimensional. Advantages of the drag-and-drop method include the ease of adding and removing plots and the independence from plotting command syntax. 1. From the Insert menu, select Plot, and then 2D. 2. Enter the expression sin(x) in an input region. 3. Select the full expression in the input region and drag it into the plot region.