" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
Verified answer
11) A = (4 ... 2) ==> det A = 4(-4) - 3(2) = -16 - 6 = -22........... (3 .. -4)
B = (5 ... -3) ==> det B = 5(1) - 2(-3) = 5 + 6 = 11
...... (2 .... 1)
AC = B
det (AC) = det B
det A . det C = det B
22 . det C = 11
det C = 11/22 = 1/2
det C^-1 = 1/(det C) = 1/(1/2) = 2
14) KL = M
K = M . L^-1
= (4 ... 23) 1/(-5) (-5 ... -2)
.. (2 .... -1) ........... (0 ..... 1)
= -1/5 . (4(-5) + 23(0) ..... 4(-2) + 23(1))
............ (2(-5) + (-1)(0) ..... 2(-2) + (-1)(1))
= -1/5 (-20 ... 15)
........... (-10 ... -5)
= (4 ... -3)
... (2 ... 1)