Question

please answer it.. with writing all the method​

Answer 1

Step-by-step explanation:

Given A=⎣⎢⎢⎡11113−1243⎦⎥⎥⎤

∣A∣=∣∣∣∣∣∣∣∣11113−1243∣∣∣∣∣∣∣∣=1(9+4)−1(3−4)+2(−1−3)

∣A∣=13+1−8=6

∣A∣=6

∣adj B∣=∣adj(adj(A))∣=∣A∣(n−1)2=∣A∣4=(6)4

∣C∣=∣3A∣=33×6

∣C∣∣adj B∣=33×664=8