MaplePrimes Questions

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!

hi

i have an array for example f[i]  that consist of 100 element. i want to plot f[ x(i) ] in terms of x(i). i dont know how i plot in maple. before i print f[x(i)] and x(i) and by copy in excell worksheet i plot in excell. but i want to plot in maple.please help me.

 

thancks

hi

 

i write a code that solve system of ode. when i ask maple to show my answer its shows following statement:

 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) = 0, T(0) = 1, T(b) = 0, f(0) = 0, (D(f))(0) = 1, (D(f))(b) = 0}, numeric);

Hello,

 

I have an error in Maple 15, I dont understand why it doesnt work. I mention that in Maple 13 it works:

 

The code is

  L:=4:

sum(diff( (x^2-1)^l,x$l),l=0..L);

 

The error is:

Error, (in SumTools:-DefiniteSum:-ClosedForm) summand is singular in the interval of summation

 

Somebody can help me, please?

Thank you

How to expand a periodic function to form of fourier series

The periodic function such as

exp(lambda(exp(I*t)-1))

I have a program that makes very simple operations (such as concatenations or comparisons of binary strings) but it is intended to produce many data.

Maple seems to be in trouble when the number of data grows: whith my (quite old) computer, it begins to be very unefficient when trepassing a thershold  about 5*104 items.

Are there some tricks I do not know?

subs.mw

Hi

How can i get maple to substitute z=x^2 into y=x^10-x^8 to produce y=z^5-z^4?

 

Hi:

Is it possible to programatically specify which variables are to be skipped and what the ranges should be for others when using the Explore command? I mean as options to Explore.

If not, is this in the future plans?

thanks,

 

I have 2 arrays of data that I have calculated ( X1 and Y1). I plot them and can see the min and the max points. I need these points. I use the command:

P:=ExtremePoints(X1, Y1);

And it gives me:

 

P:=ExtremePoints(X1, [4, 2,3,1,5,0.3,4]);

I expected that P will be an array and when I used the command:

N:=ArrayNumElems(P);

It will give me the total number of the min and max, but it gives me a mistake.

I will...

how to invert power series beginning with a square term?

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