SOLUTION: find the inverse of the matrix.
[-9 5]
[6 -3]
note -the numbers are suppossed to be in one big bracket,not separate brackets
Algebra ->
Matrices-and-determiminant
-> SOLUTION: find the inverse of the matrix.
[-9 5]
[6 -3]
note -the numbers are suppossed to be in one big bracket,not separate brackets
Log On
Question 48433: find the inverse of the matrix.
[-9 5]
[6 -3]
note -the numbers are suppossed to be in one big bracket,not separate brackets Answer by AnlytcPhil(1807) (Show Source):
find the inverse of the matrix.
[-9 5]
[ 6 -3]
The formula for the inverse of
[a b]
[c d]
is
1 .[ d -b]
ad - bc [-c a]
So the inverse of
[-9 5]
[ 6 -3]
is
1 . [-3 -5]
(-9)(-3)-(5)(6) [-6 -9]
1 . [-3 -5]
27-30 [-6 -9]
1 .[-3 -5]
-3 [-6 -9]
[1 5/3]
[2 3 ]
Edwin