Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Fie matricele A=[[5,3,1],[-1,-3,-5],[-4,-4,-1]] şi B=[[-5,-5,-3],[2,2,-1],[-4,1,-3]]. a. Matricea A·B este {[[-46,-36,-42],[38,-12,42],[32,22,38]]; [[-69,-54,-63],[57,-18,63],[48,33,57]]; [[-23,-18,-21],[19,-6,21],[16,11,19]]}. b. Matricea AT - BT este {[[5,-1,-4],[3,-3,-4],[1,-5,-1]]; [[-5,2,-4],[-5,2,1],[-3,-1,-3]]; [[10,-3,0],[8,-5,-5],[4,-4,2]]}. c. Dacă X=[[-2·x,0,1],[0,3·x,0],[1,0,-1]] şi C=A · X, atunci soluţiile din [straight complex numbers] ale ecuaţiei det[[-10·x+1,9·x,4],[2·x-5,-9·x,4],[8·x-1,-12·x,-3]]=6 sunt {{{x=5^(1/2)/12+1/4},{x=-5^(1/2)/12+1/4}}·2; {{x=5^(1/2)/12+1/4},{x=-5^(1/2)/12+1/4}}·3; {{x=5^(1/2)/12+1/4},{x=-5^(1/2)/12+1/4}}}.
Right answer summary: part 1: [[-23,-18,-21],[19,-6,21],[16,11,19]]; part 2: [[10,-3,0],[8,-5,-5],[4,-4,2]]; part 3: {{x=5^(1/2)/12+1/4},{x=-5^(1/2)/12+1/4}}
Question state: todo