## Maple in German language available?...

Is there or will there be a german version or is there a language pack available somewhere?

## Can you index arrays with a loop?...

I was wondering if you can index arrays in maple with a loop. In MATLAB, you can index all rows and columns in the Matrix, A, with A(:,:), or a portion of the elements such as A(2:10,5:20) to index, or "loop" through these specific elements. In Maple, I am trying to index the following elements, as done in MATLAB with the command

dIdQ(nmid-(imax-1)/2:nmid+(imax-1)/2,1) = -(omega_t(1:imax,1) - omega_1(nmid-imax*jmax-(imax-1)/2:nmid-imax*jmax+(imax-1)/2,1));

Is there a way to convert this matlab code to maple code?

Any help is very appreciated. Thank you!

## How to plot in polar co-ordinates...

r=a+b sin(x), this is the function I want to plot the graph in polar co-ordinates but how to manage those arbitrary constants "a and b" ?

## Help With Maple Codes for one dimensional rod with...

Hi everyone, I need someone’s expertise with the Maple Soft Application, I am currently into my 4th day of my Maple Soft experience and also returning to School after many years. Can someone help me with the following codes to solve step by step Differential Equation 1 below;

1. Boundary Condition 1
2. Boundary Condition 2
3. General Solution
4. The integration Part of the Equation
5. Solving the Differential Equation

Equation 1.

Determine the equilibrium temperature for a one dimensional rod with a constant thermal properties with the following source and boundary conditions.

1. Q = 0, U(0) = 10, u(L) = 20
2. Q/K0 = x, u(0) = 0, u(L) = 10

I understand how to obtain the solution to the equation above,

(a) Equilibrium satisfies

U’’(x) = 0,

Whose general solution is u = c1 + c2x.

The boundary condition u(0) = 0 implies c1 = 0 and u(L) = T implies c2 = T/L so that u = T x/L.

(f) In equilibrium, u satisfies

U’’(x) = −Q/K0 = −x^2,

Whose general solution (by integrating twice) is

u = −x ^4 /12 + c1 + c2x.

The boundary condition u(0) = T yields c1 = T, while u’(L) = 0 yields c2 = L^3/3.

Thus u = −x ^4 /12 + L^3x/3 + T.

When_A=1_and_M=0_1_2_4.mw

Can you help me please. i have a problem with the coding where i obtain the graph different with the journal that i have been referred to, Here is the codes, the graph that i obtained and the grpah from the journal. Thank for your help.

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 (1)
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 (2)
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## Problem with IBCs being rejected: for two coupled...

I am trying to solve a coupled pair of PDEs (Burgers eqns) for u(x,t) and v(x,t).  However, my ICs and BCs are being rejected at the (0,0) corner of the domain.

PDE_rejects_IBCs.mw

Melvin

## Maple on chromebooks...

I have managed to install Maple2017 and open the installer using the Linux terminal and everything else but I can't find the file to run maple anywhere. I have been opening and doing everything with the linux terminal but I can't open maple without the filename as chromebook are fairly useless for downloading anything, does anyone know the name of the file or a way to make it run on chromebook? Thanks for any help offered in advance

## How to read and write video file in maple?...

How to read and write video file in maple?

i want to read one video file and then manipulate this to another file and then play two files to compare in maple

if maple 12 can not , which version can do?

## Jacobian not showing for Lorenz equations...

I am trying to get jacobian computed for lorenz equations, not showing matrix, using Maple 2019 newest version. any guidance?

## orthogonal set of vectors...

Dear all

I have a set composed by vectors C(K), S(K) i would like to show that this set of vectors is orthogonal

That is, we pick any two different vectors and I compute the usual inner product and I verify if the result is zero or no

orthogonal.mw

## RK method solution for DE?...

DE:=f'''(x)+f''(x)(cos(alpha)x+sin(alpha)f(x))/2=0;

ics:=f(0)=0,f'(0)=1,f'(x)=0 for x tends to infinity;

How to solve this DE im RK methods?

## Searching for the Efficient Frontier...

HI

Hot on the heels of my previous question https://www.mapleprimes.com/questions/227935-Multiply-Contents-Of-Vector-To-Get-Expected-Value#answer262336

I have attempted to maximize growth while keeping variance below a fixed level (with not much success), but

can any of you maximize the growth of a 3 stock portfolio while minimizing the variance.

Efficient_Frontier.mw