I've heard that there are 8 ways to solve system of linear equations.is it true ? If it is true what are they?
Welcome to the forum.
8 ? hhmm I can 'start the ball rolling' with
(i) simultaneous equations by elimination
(ii) simultaneous equations by substitution
(iv) graph (not really suitable beyond 2 unknowns)
(v) spot the answer by inspection and check it works
Now I've run out for the moment.
Hopefully others can carry on.
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
There are probably more ways than that. Determinants, iteration,over relaxation, sor, Newton - Jacobi are a few more.
In mathematics, you don't understand things. You just get used to them.
I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.