
Which of the following class topics we covered relate to determinants?
a) Invertibility of a 2x2 matrix
b) A determinant 1 matrix will preserve the inputs so that the range of
the linear transformation is still within the domain  this is
useful in the Hill cipher where we want the range to still fall within
the numbers 026
c) Both a) and b)
d) Neither a) nor b)
 Use determinants to evaluate
which of the following matrices does not have an inverse?
a) Matrix([[1,2],[3,4]])
b) Matrix([[2,2],[4,4]])
c) Matrix([[0,4],[2,0]])
d) More than one of the above do not have inverses
e) All of the above have inverses