Chapter 5.5, Problem 1EQ

In Exercises 1-6, evaluate the quadratic form $f\left(\text{x}\right)={\text{x}}^{T}A\text{x}$for the given A andx.

$A=\left[\begin{array}{cc}2& 3\\ 3& 4\end{array}\right],\text{ x=}\left[\begin{array}{c}x\\ y\end{array}\right]$