Page 17 - Abstract book - TJSSF-2020

Thailand – Japan Student Science Fair 2020 (TJ-SSF 2020)
“Seeding Innovations through Fostering Thailand – Japan Youth Friendship”

Then are unknown variables.
4. Change the system of linear equations t variable equations into the form of matrices as
follows:

5. Solving systems of linear equations Using Cramer’s rule as follows:

6. Substitute in and find then

.

Keywords: Security sharing system, Polynomial function, Matrix, System of linear equations,
Raspberry Pi 3

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