I have two column matrices that I have imported into Maple from Excel (an 'x' and 'y' matrix). The algorithm I am using (that attempts to fit a circle to the data) requires the points to be in an array of the following format:

pts:=[[x1,y1],[x2,y2]...];

How can I run a loop, or other application, to pair the respective pointsto each other in an array such as the one above?

Thanks for any help.

I am looking for some practical advice on how the cool kids split a Maple worksheet across multiple files. I have been reading through the help sections on procedures and modules, but most of the information is for self-contained sections of code in one file. I have come across some info in the help sections on using multiple files, but I am hoping to find out if there is a standard, recommended way of doing this.

How I can write a procedure to explore boolean matrix??

Hi, have a problem with expressions of the following type:
```
-s^3*t^2+t^2*s+t*(1-s*t-s+s^2*t)^(2/5)*(-1+s*t)^(3/5)*(-1+s)^(3/5)*s+s*t+s-1-t+(1-s*t-s+s^2*t)^(2/5)*(-1+s*t)^(3/5)*(-1+s)^(3/5)*t+(1-s*t-s+s^2*t)^(2/5)*(-1+s*t)^(3/5)*(-1+s)^(3/5);
```

Using simplify does not work. However, when I manually collect all terms with fractional powers so that the expression becomes
```
-s^3*t^2+t^2*s+t*((1-s*t-s+s^2*t)^(2)*(-1+s*t)^(3)*(-1+s)^(3))^(1/5)*s+s*t+s-1-t+((1-s*t-s+s^2*t)^(2)*(-1+s*t)^(3)*(-1+s)^(3))^(1/5)*t+((1-s*t-s+s^2*t)^(2)*(-1+s*t)^(3)*(-1+s)^(3))^(1/5);
```

I am trying to extract numerical data from the following plot?
> data := plot({H85, H95, H97, H99}, t = 0 .. 25)
H99 for example is a function like this:
H99 := (0.8375209380e-2*exp(0.9949999999e-1*t)+19.99162479)*exp(-0.9949999999e-1*t)
Could someone please help me out... thanks

Hello, this is my first post here and I'm relatively new to Maple.
I'm using version 10 (fully updated) and have been struggling for the better part of the past two days with what should be a simple fix. I have two functions which I am equating, and then using Solve to put it in terms of one of the variables. Maple is consistently, and for a range of different functions, returning incomplete solution sets. Sometimes it is aware the set is incomplete whereas other times it is not, returning only a single result where there should be two (or more).

Hi all

I need to Solve an expression of this kind:

N=sum( z / (1-e) ,j=1..infinity)

where N and c are given numerical constants;

I need to obtain a function z(x) to plot another function F( z(x) , x ) in function of x

solve( N=sum( z / (1-e) ,j=1..infinity), z)

that gives me "warning:solutions may have been lost"

if i try to evaluate the sum, it freezes my computer just for the first 25 terms...

Hi everybody.

In the help pages, I read that :

"This PLU decomposition generates a square unit lower triangular L factor and an upper triangular factor U with the same dimensions as A so that

A = P . L . U

. The Matrix P is a permutation Matrix."

While looking into that subject, Maple offer me this:

January 19 2009
djc 546
Some years ago I have read about the method of Determinant Decision Diagrams. With this method one can analyze relatively large electrical circuits symbolically (for example opamp uA741 as a benchmark) . The authors wrote they had implemented the algorithm in Maple. I wonder if anybody read about this or tried to implement this algorithm. It would be nice to have this capability in Maple.

Here is a link:

http://portal.acm.org/citation.cfm?id=266510

I'm trying to find a function f(n) that will give the rightsum approximation of x^6 on the interval 0..4 using n rectangles and so far im coming up with nada.

So far this is what I have.

f:=n->rightsum(n^6, n=0..4,n);

but then later I'm trying to use this in a limit to find the area under the curve as n goes to infinity and I keep gettin infinity back which it absolutely is not. Would love to get some help on this as I have been droning on it for to long.

my question is:

the number of circles that can be drawn out of 10 points of which 7 are collinear is:

ifanybody knows the solution.pls send me.

answer of this question is 85

I looked at the Maple help menu and got acquainted with the op command to extract the elements of a list. How can I extract particular elements of a list. For example....

a:=[2, sqrt(7), "john", sin(57)]

how can I extract elements 2, john and sin(57) ? I tried op( [1,3,4] ,a) but I get an error message.

Thanks in advance!

<p>Hey Folks,</p>

<p>I've got a pretty simple question here. I use maple to check my work and I'm wondering how to get a numerical approximate of a Riemann sum containing a trig function. I don't want sin in the answer. For example:</p>

<p><maple>(1/40)*Pi*(Sum((1/40)*sin*i*Pi, i = 1 .. 10))</maple></p>

<p>A<maple>pproximates to 0.33928 sin.</maple></p>

<p><maple></maple><maple>Any help would be greatly appreciated. Cheers.</maple></p>

<p><maple></maple></p>