Question

Ex 1 punctele a și b!!!! E urgent !!!

Answer 1

Inmultirea matricelor- se ia linia cu coloana, se inmultesc membrii si se aduna produsul lor

a)

$\left(\begin{array}{ccc}8-15&4-10\\12+3&6+2\\\end{array}\right)=\left(\begin{array}{ccc}-7&-6\\15&8\\\end{array}\right)$

b)

$\left(\begin{array}{ccc}1-4&4-2\\4+2&16+1\\\end{array}\right)=\left(\begin{array}{ccc}-3&2\\6&17\\\end{array}\right)$

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