Let PL an QL denote, respectively, projection on and reflection in the line L through the origin with direction vector d = [a b c] =not 0
I got a proplem showing that PL is a matrix.
1/(a^2 +b^2+c^) = Matrix......a^2 ab ac
..........................................ab b^2...
I hava a problem finding out how this is showned
If A is n x n and r is not 0.
Show that CrA(x) = (r^n) * CA(x/r)
What rule should I think of in defanition.
I need help with this proof.
We have u and v of size n*1. It is giving that I of size n*n.
A = I + u*v^Transpose
Proof that if u^T*v is not = -1
then A is reverseble and that A is
A^-1 = I - (1 / (1+u^T*V))*uv^T