Hi, could anyone please explain or show me where to find what is the difference when I use "Int" and "int" for my calculations please? Thx

I tried to use multiple light sources with transparency for 3D plots and could not get it to work.  There are indications in the plot,structure help that this is supposed to be possible.  I have attached a worksheet that demonstrates some of the problems with the "light" and "LIGHT" options for 3D plotting.  Much of the output has been removed since the graphics take so much space.  The same plots are generated in both Windows and Linux.

Does anyone...

In the LinearAlgebra packet, I use the command MatrixFunction to calculate a function with respect to a matrix J as follow:

> restart; with(LinearAlgebra);

> J := Matrix(3, 3, {(1, 1) = 2, (1, 2) = 1, (1, 3) = 0, (2, 1) = 0,
 (2, 2) = 2, (2, 3) = 1, (3, 1) = 0, (3, 2) = 0, (3, 3) = 2});

> M := MatrixFunction(J, ln(1+x), x);

Then I got the answer:

Matrix(3, 3, {(1, 1) = ln(3), (1, 2) = 1/3, (1, 3) = -1/18, (2, 1) = 0, (2, 2) = ln(3...

Hello,

Complete newbie here and have being reading for the last two days.

A question that I Googled a *lot* before asking and gave up.

I have this:

Dh :=  (a, Db, b, g) -> a*Db*sqrt(tan(b)^4/(cos(g)^4*(tan(g)+tan(b))^4)+tan(g)^4/(cos(b)^4*(tan(g)+tan(b))^4)) 

I am jsut a beginner!

I was trying to get the numerical value of e^10,

but Maple did not show me the approximate commond. How to get the numerical value of this ?

Hello,

(sorry if this appeared elsewhere, but it seems my first try to ask this failed)

I tried to use Maple last night to do some heavy computational work, but it turns out (I let him print time()) that he was only active for about an hour.  He did not do anything when my Macbook Pro was on stand-by.

This morning, when he woke up, he was unwilling to stop!  I pushed the "Interrupt the current operation" button...

if my eqsn is x^4+x^3+x^2 . i can take a common factor x^2 ,then the eqsn will be x^2(x^2+x+1) ...also i can take a common factor of x ...then the eqsn will be x(x^3+x^2+x) ...how can i direct maple about my common factor ...u think this is useless but i have just made my problem simple to ask a qsn so that everyone can understand what i really want to tell

Hi !

I am in desperate need of help to solve a system of non-linear equations. I guess it cant be solved analytically, so maybe numerically? The system is

 EQ1 := u*alpha+u*s*A*Ӫ^k = alpha

EQ2: c*s^(c-1) + A*Ӫ^k*[(w-b+s^c)/(beta+alpha+s*A*Ӫ^k)]=0

EQ3 := Ӫ = [(1-u)/u]*[T/(1-T)]

I would like to solve for Ӫ, u and s. All other parameters are constant.

Help pleaseeee!

Hi all,

Im trying to use the solve command to solve the eqn:= 40 = x arccosh(56/x) for x. The command solve(eqn, x) only provides the left solution(for low values of x) while I know there must be a solution as well for higher values of x. How can I get Maple to look at the other solution?

Thanks in advance!

Hi guys, I'm trying to solve the following function:

>with(inttrans):

>invlaplace (15/(s³ + 6s² + 15s + 15), s, t)

but I'm not getting a viable answer - can maple answer this?

I've also simplified the above function a bit to: H(s) = 15/[(s + 2.3222)(s² + 3.6778s + 6.4594)] and then tried to find it's inverse laplace but still don't get an answer.

please a need help

i try to organize the matrix by indice , i.e 

B := Vector[row]([1, 4, 13]);
 ind:=indices(B);

A := Matrix(3, 3, [1, 3, 4, 2, 4, 1, 2, 3, 2]);
#i try to do that

A:=B(ind,..); # and didn´t work  

#this is what i wont,

A := [1, 1], [1, 2], [1, 3], [3, 1], [3, 2], [3, 3], [2, 1], [2, 2], [2, 3]

help

What are all the maths that are on this program?

Hello All ,

I have attached my workseet for reference.

I find it strange that the solutions calculated in optimization shows a value "X" but when i try a value greater than "X" , there is still a solution available which is very irregular.Since the optimization finds the value beyond which the solution for a6 is zero/negative.

I am not sure what is causing this problem or is it just the problem with the optimization.

Hi all!

I have declared two vector valued functions

G1:=(x,y,u)->(x/(1-a*y) , y/(1-a*y) , u/(1-a*y));

G2:=(x,y,u)->(x/(1-b*x) , y/(1-b*x) , u/(1-b*x));

And composed them, so far so good

G1G2 := G1@G2;

But now I would like to simplify G1G2, how can I do this? With simplify(G1G2) I get an error.

Any idea how I can fix this?

Thanks in advance,

Arta

Hi everyone, Im trying to solve a catenary problem. x is defined in terms of y1, y2, and a. But in my case a is the only unknown. I try to express a in terms of x, y1 and y2 by the following script:

> x := a*arccosh((y1+a)/a)+a*arccosh((y2+a)/a);

                      /y1 + a\                 /y2 + a\
       a arccosh|----------| + a arccosh|--------|
                      \  a   /                    \  a   /

> solve(x, a);

      ...