# Matlab Slices

- Make a matrix called \(A\) whose first row comprises the numbers 1, 2, 3, ..., 10; whose second row comprises 1, 3, 5, ..., 19; and whose third row is all ones.
- Let \(A_k\) denote the \(3\times3\) matrix whose first entry is \(A_{1,k}\) and whose lower-right corner element is \(A_{3,k+2}\), for \(k=1,2,\dots,8\). Find \(A_3\).
- Let \(x=[1,1,1]^T\). What is \(A_5x?\)
- What is \(x^TA_6\)?
- What is the rank of \(A\)?