MaplePrimes Questions

Hi

 

I am working with mapleSim in two different computers, one in my school and another that is mine. I am using dropbox to keep the mapleSim documents and the costum component that i am creating synchronized in both PC´s. But i have noticed that mapleSim store the file that i attacht in another folder, so when i change the components equations in one document, on the other PC there are no changes. Is it possible to change the folder where the...

I want maple 15 to show me how it works out the formula (transposition) from N = 40^(1.5t) to t = 0.666..7(ln(1/40)*N)
 
I want to know how it transposes this formula from N to t I want the steps the actual working, I can't seem to figure it out as I'm using maple 15 as a learning tool, I have all the student modules installed but have no idea what I'm doing here
 
> N = 40*exp(1.5*t);
N = 40 exp(1.5 t)
 

Hello

I need some help on a problem which seems simple...

I'm doing as follows:

restart; with(LinearAlgebra); with(plots):

II[C] := proc (delta) options operator, arrow; 230/(84192.96489-230*cos(delta)+(-1)*4128.950345*sin(delta)) end proc

(sorry for the formatting)

plot(II[C](delta), delta = -Pi .. Pi)

(This works just fine and produces a nice plot, then I continue)

f1 := plot(II[C](delta), delta = -Pi .. Pi)

Hi guys,

I tried many days but cannot find where to download or buy MapleNet 15. Please help me I am so appriciated.

Hi all,

I wonder if it makes sense to use tables as datatype for efficient maple code. I need this datatype to pass parameters to a procedure which is called many times.

In particular, I have the following criteria:

* efficient (fast) to access for read and write.

* potentially thread save ( I can also imagine having individual copies for each thread)

* present in future Maple versions

* easy to transform into C-code later

Hi, I have a J(5x5 diagonal matrix), I have M(5x5 matrix). Let i be my rows and j be my columns. I'm trying to calculate [A]ij = ([M]ij)/(JJi-JJj-2)

I cant think of a proper way to do it. Please help.

M:=Matrix([[2,5,7,9,8],[8,5,2,6,8],[5,4,5,5,7],[1,4,9,6,6]])

J:=Vector([3,5,4,9,6])

JJ:=DiagonalMatrix(J)

A11=2/(3-3-2), A12

Hi. I have nodes:=7

How do i write a matrix with my first set of nodes = -1 and a second set as 1, in a diagonal form? Sort of like a identity matrix but not quite.

What I did was to write J:=Matrix([[-1,-1,-1,-1,-1,-1,-1,1,1,1,1,1,1,1]])    ####my vector will have 2 times the number of my nodes.

Then DiagonalMatrix(J)

But I then want to change my number of nodes. Could you please advice if there's a smarter way to do this please?

I want to solve equations,program in maple as follows:

solve({n = b+2*c+q+2*r, (a+b+c)/(p+q+r) = 9, n*b-3.32*a*(a+p+2*n)*10^(-7)*t^(5/2)*exp(-18.27*10^4/t) = 0, n*c-3.32*a*(a+p+2*n)*10^(-7)*t^(5/2)*exp(-32.035*10^4/t) = 0, n*q-3.32*p*(a+p+2*n)*10^(-7)*t^(5/2)*exp(-9.16*10^4/t) = 0, n*r-3.32*p*(a+p+2*n)*10^(-7)*t^(5/2)*exp(-18.77*10^4/t) = 0, a+b+c+p+q+r+n-.73*10^28/t = 0}, {a, b, c, n, p, q, r})

I can't get the results but  "Warning, solutions may have been lost"

Can anyone help me write a procedure for Maple 15 that does the following:

INPUT: number of unknowns and equations n; augmented matrix A=[aij], where 1<=i<=n and 1<=j<=n+1.
OUTPUT: solution x[1], x[2], ... , x[n] or message that the linear system has no unique solution.

Step 1: For i=1,...,n-1 do steps 2-4.  # Elimination process.

Step 2: Let p be the smallest integer with i<=p<=n and A[p,i]≠0.
          ...


every time I enter / or ^, maple automatically changed the text I entered into fraction or power, and I am having hard time enter equations normally like the way I do in graphic calculator or matlab. I am forced to type all my equations on a text pad and then copy over.

is there a way to stop maple from auto formatting my input text? I am more of a matlab guy and I really need to use symbolics and integration abilities right now, but this version of maple is making...

I would like to simplify algebraic modulo expression.

For example, (N+k) mod N should be simplified to k mod N (N and k are positive integers).

Is there a way to achieve this with maple?

Thank you!

 

can someone please help me out on how to solve second order nonlinear coupled ode with perturbation  method in maple

Problem. Let MNPQ be a square.  Find the other two vertices,  knowing that,  the vertices M(5; 3; -1), P(2; 3; -4) and N lies on the plane x + y - z  - 6 = 0.

This is my code

> restart:

with(LinearAlgebra):

M:=<5,3,-1>:

P:=<2,3,-4>:

N:=<x,y,z>:

A:=DotProduct(M-N,P-N,conjugate =false):

I have this

plotS := plots[:-implicitplot3d](S0(2, 1, x0, sigmaH) = S0(c, delta, xT, sigmaL), c = 0 .. 4, delta = 1 .. 3, xT = .8 .. 1)

to draw the graph below. What I would really like is to revert the direction of the xT axis. Any way to do this??

 

Thank you for your help

neeeeed help
Can someone help me to figure out what's wrong with my polygon's point representation inside my attachmed program? I  am not so much experieced with maple,actually I am a beginner, so can't see the fault in coding...

I'd really appreciate one's help,thx 

Polygon_Problem.mw
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