QM Tutorial Session 2

_{A = (9 4 3)
What is the dimension of A?}

• 1x3

• 3x1

Is matrix addition defined for this case?

• Yes

• No

Is it defined for this case?

• Yes

• No

What must be true about a matrix to be invertible?

• The matrix must be square

• The transpose of the matrix can not be the same

• The determinant of the matrix must not be 0

• The columns of of the matrix must be dependent vectors

Which of the following operations are defined?

• A + B

• B + A

• A * B

• B * A

Which of the following functions are linear transformations?

• f

• g

• s

• r