## herclau

Mr. Hermes Rozsa Iglesias

## 1038 Reputation

19 years, 184 days

## How to find the arithmetic mean of all r...

Maple

Hi MaplePrimes,

I want to find the arithmetic mean of all radius from ellipse sector.

Let me explain: I want the average radius of the interval in red
on the ellipse that is between the two radios

## The function diff of Matlab calculates d...

Maple

Hello
Is it possible to reproduce this MathCad example in Maple?

The quantity `diff(y)./diff(x)` is an approximate derivative.

• ```x = [1 2 3 4 5];
y = diff(x)
y =
1     1     1     1

z = diff(x,2)
z =
0     0     0
```

Given,

• ```A = rand(1,3,2,4);
```

`diff(A)` is the first-order difference along dimension `2`.

`diff(A,3,4)` is the third-order difference along dimension `4`.

The function diff of Matlab calculates differences between adjacent elements of X along the first array dimension whose size does not equal 1

Is there a similar function in Mape?

## How do I solve this system equation in M...

Maple 2015

Hello
I try to reproduce in Maple this document in pdf. In it you can see the code in MathCad to find the roots of a system of equations by the method of Draghilev.
After seeing some of the codes posted in the Maple forum where the development of the method is shown and reading the document in the Application Center, some questions arise.
When the deferential ecacuion system is divided, in this case stored in variale b [i], by b [i] / (b [1] ^ 2 + b [2] ^ 2) ^ 0.5; i = 1..n + 1
Why, as I could see in some systems, the first two differential equations are taken and in others it takes three?
And in what systems does it divide at all?

https://www.mapleprimes.com/view.aspx?sf=223821_question/Draghilev

In this case in my transfer of code from Mathcad to Maple I do not get the initial values of the system fsolve calculates indefinitely

sistema9.mw

## How to find the points indicated in the ...

Maple

Hello,
How to find the points indicated in the graph of the following function:
(1.25 * y-sqrt (abs (x))) ^ 2 + x ^ 2-1,

I have used the Taks: the Second Derivative Test. Without results, as I show below:

Critical Points and the Second Derivative Test

Objective Function

 >
 (1)
 >
 >
 >

List of Independent Variables

 >
 (2)

Equations

 >
 (3)

Critical Points

 >
 (4)

Second Derivative Test

 >
 (5)

Hessians and their Eigenvalues

 >