I need to check that my work is correct for these transformation matrices.
A, a reflection in Ox.
B, an enlargement by a factor 2.
C, a rotation by about O.
D, a stretch by a factor of 3 in the direction Oy.
E, a reflection in the line y=x.
Can someone help me see of they are correct?
This is because the transformation matrix is always written on the left of the object that it's working on. So if I transform with matrix , I'll get:Then if we do to this, we get:
So followed by is , not .
Can you see where you've gone wrong now?