I want to use the NonIsomorphicGraphs command in the GraphTheory package to find all nonisomorphic graphs on n vertices where all vertices have degree at least 1. I believe that I should be able to do this using the select=procedure option, but the Maple Help Files don't seem to give me enough information as to how I code the procedure. In particular, I don't know precisely how to pass the candidate graphs from NonIsomorphicGraphs to my procedure and what to call the graphs once they are in my procedure. I suspect that the ouput of the procedure should be true or false

Hello, I have a set of two ODE's with a parameter H, so the solutions should look like: p(t,H) and g(t,H). How should i solve them (numerically) to produce a plot p(t,H). (H is just a constant not a variable) Cheers, Stanisław

Hello, It is possible in Maple to change the values of the arguments passed to a procedure. For example, look at the following procedure: f := proc(x) x := 7; print(x); end; Now you can say f(y); which would print "y" and set the value of y to 7. But then subsequently executing f(y); would give an "illegal use of a formal parameter", since y evaluates to 7 (so the assignment would result in an "invalid left hand side of assignment"). Two questions:

Hello,

Hello everyone,

I am trying to figure out how to factor expressions like:

1+2*exp(x)+exp(2*x)

Simply trying factor does not work.

factor(1+2*exp(x)+exp(2*x)) => 1+2*exp(x)+exp(2*x)

Of course, I can force a substitution and make it work:

factor(subs(exp(2*x)=exp(x)^2,1+2*exp(x)+exp(2*x))) => (exp(x)+1)^2

In general however, I would like to not have to specify a substitution or even what is in the exponent!

Any help would be appreciated.

Thanks.

I have two equal matrices; one specified with decimals and one with fractions. Maple outputs a different reduced row echelon form for the two which is very confusing! Even if it is because Maple is calculating with limited precision on decimals I don't see ANY reason why Maple shouldn't be able to deduce where the 1's and the 0's should be. The first result seems to be completely wrong as it doesn't even match the last result remotely close. Does it? Whats happening here? Link to picture showing maple worksheet:

I'm trying to put together an analysis of a damped harmonic oscillator for a tutorial and I can't get the answer into the form I'd like. If you have a complex exponential, you can easily express it as a sum of a sin and cos using the convert function with the 'trig' option. If you have a term in the exponent that always evaluates to complex value because of the assumptions on your variables, however, it will always write the expression in terms of sinh and cosh. Is there any way to force Maple to put the solution in terms of sin and cos?

assume(A>=0);additionally(A::real);

Hi, I am trying to filter out solutions of 0 to 5 decimal places (i.e. 0.00000.....) from a loop. How do I do this?

 

Thank you.

Hello! First, please excuse me for my possible english mistakes (I'm french so...). Then, I need some help with Maple 11. As I wrote in the title I'm working on imaging. My aim is to create a lightsaber on a picture (as Photoshop do).

I am trying to add a point to an existing 2d plot, I understand how to plot functions and points but I can't seem to combine them into a single plot.  I am new to maple and still getting use to the functionality.  Any suggestions will be appreciated.

Friends sorry for the inconvenience ... it is this sheet:

Hallo, I have 9 functions and 9 unknown variables. I want to solve these 9 variables. I tried this by defining al the 9 functions and the known variables in maple and the 'solve({Fx1,Fx2....Fxn},{N1,N2.....Nn})' commando. I get an answer but I don't understand what it means: {Fb = 825., Fc = -675., Fd = -2025.-3.Fm, Fe = -2025.-3.Fm, Fj = 1200.+2.Fm, Fk = -2.Fm-1350., Fl = Fm, Fm = Fm, Fr = 250.}. I don't know what they mean with 'Fd = -2025.-3.Fm.' Tanx, Olivier

I try this Explore(polarplot(1+a*cos(theta), theta = 0 .. 2*Pi)) but not work. I want to see how parameter a is changing the polarplot. this Explore(plot(1+a*cos(theta), theta = 0 .. 2*Pi, coords = polar)) is OK but not what I want. Thanks

Hello,

           I really need help creating a formula to get  the intersection  of 2 different sine waves with one single formula. I need to be able to vary the frequencies es and get data with one formula avoiding breaking down the process in different steps.

Does anybody know how to do this? I've tried for hours playing around with the basic sine wave forulae, attempting to make them interact but to no avail...