In Exercises 13 - 18, use the fact that if
a b d - b
A = then A^(-1) = 1/(ad-bc) to find the inverse of
c d - c a
each matrix, if possible. Check that AA^(-1) = I_2 and A^(-1)A = I_2.
3 - 1
A =
- 4 2
Verified Solution
This video solution was recommended by our tutors as helpful for the problem above
Video duration:
10m
Play a video:
Was this helpful?
Watch next
Master Determinants of 2×2 Matrices with a bite sized video explanation from Patrick Ford