G=[12 0 -6 2],what is the determinant of g?

1 Answer
Jim G.
Feb 8, 2018

#1/24((2,0),(6,12))#

Explanation:

#"assuming the matrix is "((12,0),(-6,2))#

#"the determinant of a 2 by 2 square matrix is"#

#"given "A=((a,b),(c,d))" then"#

#A^-1=1/(ad-bc)((d,-b),(-c,a))#

#"here "ad-bc=(12xx2)-(0xx-6)=24#

#rArrG^-1=1/24((2,0),(6,12))#

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