Given the matrices: 1 2 A= 1 -1 2 1 1 B= 3 4 Calculate AB: C11 C12 [2.1] х 1 2 3 4 C21 C22 C11 = C12 = -2 C22 - C215 DONE

Step-by-step explanation:

Given the matrices

Calculating AB:

Multiply the rows of the first matrix by the columns of the second matrix

Hence,

Therefore,

since both sides equal, there are infinitely many olutions.