This program solves a system of equation with N unknown. (You chose the number of unknown that you want. You can far exceed the Casio equation solver which is limited to 6 unknown)

it is very court, and copied into calculator in just 5 minutes (25 lines)

Use:

take an example
you want to solve a system of equation 2 as unknown
ax + by = c
dx + ey = f

[Red] Step 1: sizing the matrix A [/ red]
we must create a matrix of 2 rows and 3 column.

[Red] Step 2: Fill the matrix [/ red]
it is filled as follows:
1 2 3
1 a b c
2 d e f

[Red] Step 3: execute the program equation [/ red]
load varies depending on the number of unknown
The program displays the end of the execution an array containing the values of our unknowns.
1
1 -1
1 2

Line 1 is x, line 2 is there

and here
you have solved the system

we took as an example a system of equation in two unknowns, but it is easy to imagine a system of equation 15, 25 or even unknown ...


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the only small problem of this program is that it asks a lot of space on the calculator to work (it varies depending on the number of unknowns ...) it is easy to Envision a future version that is less memory-intensive, but the load time may be a bit longer ... follow.