I have been using the DirectSearch package contributed by Dr. Sergey N. Moiseev.  It works very well for the problems I have been working on and would like to use it in Matlab.  Is anyone aware of a Matlab version, how I may convert this to a Matlab file, or call Maple from Malab? 

Hello,

I would like to write some functions and algebra that work with dual numbers.

http://en.wikipedia.org/wiki/Dual_number 

http://en.wikipedia.org/wiki/Dual_quaternion 

I have not found a library that supports this.

The basis of dual numbers it is epsilon^2=0, similar to i,j,k in complex algebra where i^2=-1,i*j=-1 etc.

Hi,

somehow Maple does not integrate a procedure in the correct way. And I don't know why. Could you please help?

This procedure creates a matrix of a special form

P:=proc(n,k,A,d,Lambda)

local p,i,j,m,off,eps:  

if n<6 then print("n greater 6"): return: end if:  

if (n mod 4)<>2 then print("n has to be n (mod 4) = 2 "): return: end if:  

eps:=proc(m,A,Lambda,k) (k+m*Lambda*2)^2+A/2 end proc:  

hi

i have written the followin code that achieve Y from determinant of matric aa. but when i change digit my result changes. i dont know why? 

> restart;
> with(LinearAlgebra);
> Digits := 100;
>
> NULL;
> upsilon := .38;
> rho := 0.122e4;
> l := 0.176e-4;
> h := 2*0.176e-4;
> L := 20*h;
> NULL;
> E := 0.144e10;
> lambda := E*upsilon/((1+upsilon)*(1-2*upsilon));

Hiim using maple 14 and tried to apply the sum of vector's elements, y appears a error (Error, unsupported type of index, n)

a := Vector(5, {(1) = 1, (2) = 2, (3) = 3, (4) = 4, (5) = 5});
> sum(a(n), n = 1 .. 5);

Error, unsupported type of index, n

please need some help

Thanks

Dear All Members;

In my research I faced with this problem and I appreciate if any of you specialists be able to help me in this issue. I brought the question here:

question.pdf

Please let me know that is it possible to finde this derivative of Bi-variate Normal distribution in Maple? If yes, could you please help me to do this?

Sincerely; 

Hello all,

I have a system of linear equations that I need to solve. My problem is that the right hand side of the equations are numbers that are published in existing research and are thus rounded results. For example, say I have the following equation:

x + y = 0.133 and some others

What I want to do is find the range of my variables x and y such that, when the calculations are done, the result (rounded to 3 decimals) will equal...

hi

i write the following code

> restart;
>
nn:=2;
NB:=0.5;
Le:=2;
Pr:=2;
b:=13;

aa:=-0.2;
                              -0.2

for iu from 0 by 1 to 20 do
Nt:=aa+0.2;
sol := dsolve({diff(G(x), x, x)+Le*f(x)*(diff(G(x), x))+(Nt/NB)*diff(T(x), x, x...

Hello all,

I have been able to plot data points onto a surface using plots[matrixplot]. I would like to display a circular geometry with changes in magnitude in the Z-axis. For Example if I had the following matrix:

0 0 1 1 0 0 

0 1 1 1 1 0

0 1 2 2 1 0

0 1 1 1 1 0

0 0 1 1 0 0

I would like  the zero elements to be ignored in the plot as they are not defined.

I was hoping I could provide a special character (such as NULL...

hi

i have written the following code but it not converge. how can i do?

> restart;
>
nn:=2;
Nt:=0.5;
NB:=0.5;
Le:=0.5;
Pr:=2;
b:=18;

 sol := dsolve({diff(G(x), x, x)+Le*f(x)*(diff(G(x), x))+(Nt/NB)*diff(T(x), x, x) = 0,diff(f(x), x, x, x)+f(x)*(diff(f(x), x, x))-(2*nn)/(nn+1)*(diff(f(x), x))^2 = 0,diff(T(x), x, x)/Pr+f(x)*(diff(T(x), x))+NB*(diff(T(x), x))*(diff(G(x), x))+Nt*(diff(T(x), x))^2=0,G(0) = 1, G(b...

Does anyone happen to have a worksheet that implements LinearAlgebra[Generic][SmithForm] 

for Euclidean domains like Z[w], w^3 = 1, or Z[sqrt(d)] where d = −11, −7, −3, −2, −1, 2, 3, 5, 6, 7, 11, 13, 17, 19, 21, 29, 33, 37, 41, 57, 73?

If so I would greatly appreciate receiving a copy of it.

--Edwin Clark

I have a problem with the numerical integration in Maple. Any help or suggestion will be greatly appreciated!

K[1] := 1.0;
K[2] := 1;
K[3] := 0.16;
nu:=-5.92;
alpha:=8;
y:=0.01;

dF:=proc(z,y)
local k,q,h;
q:=BesselI(alpha,z)/BesselI(0.0,z);
h:=2*(K[1]*q-y)/(K[3]+(K[3]^2+4*K[2]*z^2*K[1]*q-4*K[2]*z^2*y)^(1/2));
k:=-(K[3]^2+4*K[2]*z^2*(K[1]*q-y))^(-1/2);
z^nu*h^(nu-1)*exp(-1/2/h-z^2*h/2)*k;
end proc:

hi

i want to know what is the algorithm of dsolve( , numeric,bvp)  for example Rung kutta shooting, newton or ....

in maple it shows newton iteration , i dont know what it means.

thancks

Is it possible to search a variable or any word or a command in a long worksheet

Thanks in advance

Hello all-

I have a system of equations, something like:

X1+X2+X3=1

and then I have seperate equations such as:

X3=T*X1^2*exp(.12/T) and so on

I'd like to make a plot of X1,X2,X3 as a function of T.  How can I do this?

Thank you for your time!