, where k is constant
A transformation T:R^2 arrow R^2 is represented by the matrix A.
Find the value of k for which the line y=2x is mapped onto itself under T.
What I did:
Therefore k=5 and k=1 !!
What I should do:
Where is my principle wrong? Please point it out, because i fear its something fundamental and i may have to suffer direly for it later.