Chapter 15.4, Problem 12CC

1. a. Create the matrix $\text{CCM1=}\left[\begin{array}{ll}18\hfill & 0.3\hfill \\ -4.1\hfill & -1\hfill \\ 0\hfill & 17\hfill \end{array}\right]$  using a single MATLAB command.
2. b. Create the matrix $\text{CCM2=}\left[\begin{array}{lll}0\hfill & 0\hfill & 0\hfill \\ 0\hfill & 0\hfill & 1\times {10}^{15}\hfill \\ 0\hfill & 0\hfill & 1\times {10}^{15}\hfill \end{array}\right]$ using a single MATLAB command.
3. c. Assume the 3 × 3matrix CCM3 has already been defined as $\text{CCM3=}\left[\begin{array}{lll}3\hfill & 9\hfill & 14\hfill \\ 6\hfill & 0.5\hfill & 4\times {10}^{-2}\hfill \\ 44\hfill & 0\hfill & 1\times {10}^3\hfill \end{array}\right]$

   Using a single MATLAB command, define a new 2 × 2 matrix named Corners that contains the corner elements of CCM3. Your code should still work correctly if the contents of CCM3 change but it rema1ns a 3 × 3; in other words, DO NOT hard-code the four values.