Matrices can be used to represent simultaneous equations.
If you have:
ax + by = e
cx + dy = f
Then that's equivalent to the matrix equation:
[fleft][a b]*
[c d][/fleft][fleft][e]=
[f][/fleft][x]
[y]
I think. It's been a while, I may have switched the order around.
Edit: Yeah, other way around.
[fleft][a b]*
[c d][/fleft][fleft][x]=
[y][/fleft][e]
[f]
If you have:
ax + by = e
cx + dy = f
Then that's equivalent to the matrix equation:
[fleft][a b]*
[c d][/fleft][fleft][e]=
[f][/fleft][x]
[y]
I think. It's been a while, I may have switched the order around.
Edit: Yeah, other way around.
[fleft][a b]*
[c d][/fleft][fleft][x]=
[y][/fleft][e]
[f]