Q: Linear Algebra about finding inner product of arbitrary polynomials $f(x)$ and $g(x)$ are arbitrary polynomials of degree at most 2.
$\langle f,g\rangle=f(-2)g(-2)+f(0)g(0)+f(1)g(1)$
$f(x)=4x^2+4x-5$ and $g(x)=3x^2-6x-5$
find $\langle f,g\rangle$
and the angle between $\langle f,g\rangle$
