The part I'm having problems with is where the last two expressions in 4.13 are equated. Why is xtKx*equal to x*^tKx*?
The Attempt at a Solution
xtKx* is an inner product and due to symmetry is equal to x*^tKx, but wouldnt equating x to x* mean every <x,y> = <x,x> = <y,y>?
Many thanks if someone decides to help me out.