Vectors and matrices

Question 1 of 10

The image of the point (1, 2) under the matrix [[2, 0], [0, 3]] is

Question 2 of 10

The matrix (1 0; 0 −1) represents

Question 3 of 10

The identity matrix of order 2 is

Question 4 of 10

A is (2, 4) and B is (6, 0). What is the position vector of the midpoint of AB?

Question 5 of 10

The angle between vectors a and b with a · b = 0 is

Question 6 of 10

The matrix (0 −1; 1 0) represents

Question 7 of 10

Find the product [[1, 2], [0, 1]] × [[3], [4]].

Question 8 of 10

If a · b = ½|a||b|, what is the angle between a and b?

Question 9 of 10

The matrix [[0, −1], [1, 0]] represents a rotation of

Question 10 of 10

The determinant of [[4, 6], [2, 3]] is