matrices Flashcards
1
Q
How to find the determinant of a 2x2 matrix
A
Det |A| = ad - bc
2
Q
Reflect in x axis
A
(x;y) > (x;-y) [10/0-1]
3
Q
Reflection in y-axis
A
(x;y) > (-x;y) [-10/01]
4
Q
Reflection in y = x
A
(x;y) > (y;x) [01/10]
5
Q
Reflect in y = -x
A
(x;y) > (-y;-x) [-10/0-1]
6
Q
Reflect in y =mx
A
[cos2@ sin2@/sin2@ - cos2@]
7
Q
Rotation 90 degrees anti-clockwise
A
(x;y) > (y;-x) [01/-10]
8
Q
Rotation 90 degrees clockwise
A
(x;y) > (-y; x) {0-1/10}
