if A= [ 3 -3 4 2 -3 4 0 -1 1 ] , then A-1= A A2 A3 A4 Share with your friends Share 0 Priyanka Kedia answered this A=3-342-340-11A=3-3+4+32-0+4-2+0=3+6-8=1≠0Let B is the matrix of cofactors of the element in ASo, B=B11B12B13B21B22B23B31B32B33Now, B11=-34-11=-3+4=1 B12=-2401=-2-0=-2 B13=2-30-1=-2+0=-2 B21=--34-11=--3+4=-1 B22=3401=3-0=3 B23=-3-30-1=--3+0=3 B31=-34-34=-12+12=0 B32=-3424=-12-8=-4B33=3-32-3=-9+6=-3So,B=1-2-2-1330-4-3Adj A=B'=1-10-23-4-23-3 A-1=1AAdj A=111-10-23-4-23-3Now,A2=A×A=3-342-340-11×3-342-340-11=3-440-10-22-3A3=A×A2=3-342-340-11×3-440-10-22-3=1-10-23-4-23-3=A-1Thus, option C is correct. 0 View Full Answer