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Topic: Apples, oranges, pears, lemons


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Subject:   Apples, oranges, pears, lemons
Author: Maurici
Date: Aug 31 2012
Posted 3 free online programs about mental arithmetic, and linear algebra:

- Adding apples and oranges is about to solve a system of equations 2*2.
- Adding apples oranges and pears is about to solve a system of equations
3*3.
- Adding apples oranges pears and lemons is about to solve a system of equations
4*4.

All the programs include a tool introducing the Gaussian elimination.

But is very simple.
The program helps a little showing the divisors of each row.
And all the solutions are integer positive, without zero.

The programs are at:
http://www.nummolt.com/obbl/appleorange/index.html
http://www.nummolt.com/obbl/appleorangepear/index.html
http://www.nummolt.com/obbl/aopl/index.html

There are video help files:
(2*2) http://www.youtube.com/watch?v=ikK9iEQKE6M  
(3*3) http://www.youtube.com/watch?v=JeR49wRKUc0
(4*4) http://www.youtube.com/watch?v=YHKHWqYAEyQ

Maurici Carbo
nummolt.com


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