Question

ajutor la aceste matrice.
a) și b)
Dau coroană!!!

Answer 1

a)
[tex] =\left[\begin{array}{ccc}4*2+4*(-3)&5*1+5*(-2)\\6*2+(-1)(-3)&(-1)*1+(-1)(-2)\\\end{array}\right] = \left[\begin{array}{ccc}8-12&5-10\\15&1\\\end{array}\right] = = \left[\begin{array}{ccc}-4&-5\\15&1\\\end{array}\right] [/tex]

b)$\left[\begin{array}{ccc}1*1+(-2)*2&(-2)*4+(-2)*1\\4*1+4*2&4*4+1*1\\\end{array}\right] = \left[\begin{array}{ccc}-3&-10\\12&17\\\end{array}\right]$