Question

How do you find the product of `[(1,2), (3,4)][(-1),(3)]`?

Answer 1

The answeris `=((5),(9))`

Explanation:

It's the product of 2 matrices

`( (a,b), (c,d) ) *((e),(f))=((ae+bf),(ce+df))`

Therefore,

`((1,2),(3,4))*((-1),(3))=((-1+6),(-3+12))`

`=((5),(9))`