matrices

Question 1

How to find the determinant of a 2x2 matrix

Answer 1

Det |A| = ad - bc

Question 2

Reflect in x axis

Answer 2

(x;y) > (x;-y) [10/0-1]

Question 3

Reflection in y-axis

Answer 3

(x;y) > (-x;y) [-10/01]

Question 4

Reflection in y = x

Answer 4

(x;y) > (y;x) [01/10]

Question 5

Reflect in y = -x

Answer 5

(x;y) > (-y;-x) [-10/0-1]

Question 6

Reflect in y =mx

Answer 6

[cos2@ sin2@/sin2@ - cos2@]

Question 7

Rotation 90 degrees anti-clockwise

Answer 7

(x;y) > (y;-x) [01/-10]

Question 8

Rotation 90 degrees clockwise

Answer 8

(x;y) > (-y; x) {0-1/10}