represents a rotation around and angle so ,
Fernando Revilla
Given matrix M and vector X where:
Compute:
So I found that the result is 1.
The question is to explain the result and describe the action of M geometrically.
I think the result means that
which, geometrically, doesn't change the length of vector X. Would that be correct?
represents a rotation around and angle so ,
Fernando Revilla
But the length does not change by the fact of being orthogonal (in this case a rotation) and not by the fact of being . For example:
has determinant , however
Fernando Revilla