How do you multiply $((5, -2, 1))$ and $((1, 2))$ ?

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Answer 1 · 2016-07-25T20:03:58

The Multiplication is not possible.

The First Matrix $[A]_(1xx3)$

The Second one $[B]_(1xx2)$

$:.$ the no. of columns of $[A]=3!=1=$ the no. of rows of $[B]$ .

#:. Neither [A][B] nor [B][A] is possible.

How do you multiply ((5, -2, 1))((5, -2, 1)) and ((1, 2))((1, 2))?