Hi! I have a matrix A where the entries

satisfy the conditions in eq1. I set A equal

to the general

4x4 matrix X and convert to a set so that I can 

solve the system of equations for the variables

in A (i.e. solve for a,b,c,d, s,t,r,l). However,

in my program below, I get "res:= "

when the program finishes. Why isn't it

giving me any output? Thanks!

Please help me in this integration. It does not work.  

restart;with(LinearAlgebra); with(linalg);

Q := x->0.5*erfc(x/sqrt(2));

rho:=0.25;sigma := 0.3;

m1 := sigma*sigma*Matrix(3, 3, [1, rho, rho^2, rho, 1, rho, rho^2, rho, 1]);

SNR := 15; mu := evalf(10^(.1*SNR));

 a := Matrix(1, 3, [(ln(y/mu)+4*sigma^2)^2, (ln(y1/mu)+4*sigma^2)^2,

 (ln(y2/mu)+4*sigma^2)^2]);

having its diameter equal to three and its number of vertices equal to 32? Is it possible to find the one with Maple? The simpleminded approach
>with(GraphTheory):
>with(RandomGraphs):
> G := RandomRegularGraph(32, 4);
> Diameter(G);
produces 4 or 5.
What I know is http://www-ma4.upc.es/~comellas/delta-d/desc_g/desc_g3.html ( the second graph).

 In the following root finding code, the wn[1] is calculated as [] although it is within the specified range. would you please tell me why?

integrate ∫dx/√((x^2+1)(ln(x^2+√(x^2+1)))

In calculus of variations one may have the integrand of a functional F = sqrt(1+(y'(x))^2)

How do I get Maple to evaluate ∂F/∂y' ? (Maple doesn't recognise y' like Mathematica does)

( The answer is, of course, y'y''/sqrt(1+(y'(x))^2) )

hi,

i have an exercise ,i have to do for sunday:

a program on maple 13 of o numerical solution of heat equation for  semi-infinite rod where a finite quantity of heat is injected into the left end in the form of pulse instant

please i need your help.

I know

convert(sin(x),expln)

can convert sin(x) to expression which has "exp"

but how to produce the inverse operation?

Maple people:

I just installed Maple 16 on my home PC.  I prefer using Classic Worksheet Maple, so that I can actually tell what I have typed, and what I type appears in red typewriter font.  I also would like matching parentheses to blink when I enter stuff so I enter the right number of parentheses.  Maple works this way on my office PC, but I can't get it to work this way at home.  I could simply use regular Maple 16 (not Classic Worksheet...

Dear all,

need to take data(a,u) from eq1 and plug it in eq2

eq1 is:

eq2 is:

Then need to plot data (a,v)

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

I did that:

points:=seq([a,evalf(solve((alpha+(l+alpha)*u+alpha*k*u^2)*a=u*(alpha+(l+alpha)*u+alpha*k*u^2...

Hi,

I'm trying to write a function in an 'n' dimensional vector such that I can call upon this function in a loop to define hessian matrices, or simply evaluate the function value for a given input. Here's an example:

F(x,y,z)= 6*x^2 + 3x*y^2 - 1.5*z^3

which is a function in 3 dimensions with x,y,z representing the 3 components of a design vector.

I want to be able to call upon this function in a loop such as:

I was given the following MGF and need some help determining the E(X), Var(X) and P(4.1<X<4.7) using Maple

MGF of X is M(t) = 1/(1-3t) , t<1/3

How can I get Maple to do this for me?

Thanks again :)

Is there a possibility translate Maple code to Reduce code ?

Hello,

do 3D-OpenGL-Graphics in Maple 16/17 on Linux-x86_64 (openSUSE 12.2/12.3)  work with Intel HD 3000/4000 Graphics?

Thank you very much.

Ralph Trenkler

Maple 16 is crashing when saving. I have this problem in both

my desktop and laptop (PC, Win7), classic and standard worksheets.

I noticed that short files present no problem, but whenever the

worsheets are, say, more than 5 screens length, Maple 16

crashes when saving.

Anyone with the same problem? Any solutions? Thanks

MaxB