Question

Cum se inmultesc matricile astea?

1
(3 ) x ( 1 3 2)
2

Multumesc. Prima este tot in matrice.

Answer 1

$\displaystyle \mathtt{ \left(\begin{array}{ccc}\mathtt1\\\mathtt3\\\mathtt2\end{array}\right)\cdot \left(\begin{array}{ccc}\mathtt1&\mathtt3&\mathtt2\end{array}\right)= \left(\begin{array}{ccc}\mathtt{1\cdot1}&\mathtt{1\cdot3}&\mathtt{1\cdot2}\\\mathtt{3\cdot1}&\mathtt{3\cdot3}&\mathtt{3\cdot2}\\\mathtt{2\cdot1}&\mathtt{2\cdot3}&\mathtt{2\cdot2}\end{array}\right)=\left(\begin{array}{ccc}\mathtt1&\mathtt3&\mathtt2\\\mathtt3&\mathtt9&\mathtt6\\\mathtt2&\mathtt6&\mathtt4\end{array}\right)}$