Chapter 2.3, Problem 2E

Find the (infinity norm) condition number of

(a) $A=\left[\begin{array}{cc}1& 2\\ 3& 4\end{array}\right]$

(b) $A=\left[\begin{array}{cc}1& 2.01\\ 3& 6\end{array}\right]$

(c) $A=\left[\begin{array}{cc}6& 3\\ 4& 2\end{array}\right]$