On \(\displaystyle{P}^{{2}}\) the standart inner product is given by, for \(\displaystyle{p}{\left({x}\right)}={a}{0}+{a}{1}{x}+{a}{2}{x}^{{2}},{q}{\left({x}\right)}={b}{0}+{b}{1}{x}+{b}{2}{x}^{{2}}∈{P}^{{2}}\).

PSK(p,q)=a0b0+a1b1x+a2b2x^2 =-5*3+4*4x+(-2)x^2 =-15+16x-2x^2ZSK

PSK(p,q)=a0b0+a1b1x+a2b2x^2 =-5*3+4*4x+(-2)x^2 =-15+16x-2x^2ZSK