reflection of a matrix?

A

Ali

New member
1- Give a matrix to express the reflection of a two dimensional vector about
the vertical axis. Use the matrix to reflect the vector i + 2j about the
vertical axis.


2- Find the value of c for the matrix
C =
??????
3 0 0 0 0
0 3 0 0 0
0 0 2 0 0
0 0 0 c 0
0 0 0 0 1
??????
to be singular. Find the value of c for the Trace of matrix C to be 1.
 
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