Lecture Notes 10
3
MATA33H3 Full Course Notes
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Lecture to: 6 matrix inverse c-f-57 s -4) if a is. Ca : i invertible & its inverse is c bsbls. bz . D is invertible < = > r= in. Ex. a=[y ;] is ivertible < = > f can 3 invertible , then matrix equation ax - B. has the unique solution = a- & c is the unique inverse of a & we show it as a" let bnxn be a square matrix & rnxn be its. T (cid:8869) 1 :[% / %) hosei: :/ %) Moreover, the same sequence of eros takes ( a 1 in) ( rl b) nxn. 1 c c determine it a is invertible. " " " " ii :|: : : 173 - ri r3 -2 9/-4 i. " " " ii : : : :/ """" "" 0 2 -8 -1 c l b- " A - then lha ) ao - bas - 3=5.
