(a) Your friend Jon challenges you to write down a 3 imes 3
matrix using all of and only the elements from the set {−2,2,3,4}
which is not invertible.
Respond to Jon by giving the matrix
A=
[[-2,2,3];[-2,2,3];[4,4,4]]
Preview .
(b) Jon also asks you to write down a 3 imes 3
matrix using all of and only the elements from the set {−2,1,2,4}
which is invertible.
Provide your answer to Jon's question by giving the matrix
B=
[[-2,1,4];[4,2,-2];[2,-2,1]]
Preview .