Chapter 2.2, Problem 1E

Evaluate each of the following determinants by inspection.

(a) $\left|\begin{array}{ccc}0& 0& 3\\ 0& 4& 1\\ 2& 3& 1\end{array}\right|$

(b) $\left|\begin{array}{cccc}1& 1& 1& 3\\ 0& 3& 1& 1\\ 0& 0& 2& 2\\ -1& -1& -1& 2\end{array}\right|$

(c) $\left|\begin{array}{cccc}0& 0& 0& 1\\ 1& 0& 0& 0\\ 0& 1& 0& 0\\ 0& 0& 1& 0\end{array}\right|$