Chapter 2.9, Problem 7E

Let b₁ = $\left[\begin{array}{l}3\\ 0\end{array}\right]$, b₂ = $\left[\begin{array}{l}-1\\ 2\end{array}\right]$, w = $\left[\begin{array}{l}7\\ -2\end{array}\right]$, x = $\left[\begin{array}{l}4\\ 1\end{array}\right]$, and B = {b₁, b₂}. Use the figure to estimate [w]_B and [x]_B. Confirm your estimate of [x]_B by using it and {b₁, b₂} to compute x.