Problem

A=[21815161213050519837219]A=\left[\begin{array}{rr}2 & -1 & 8 & 15 & 1 \\6 & -12 & -13 & 0 & 5 \\0 &-5 &1 & 9 & -8 \\3 &7 &-2 & -1 & 9\end{array}\right]
A, start subscript, 3, comma, 5, end subscript, equals
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, p, i or 2, slash, 3, space, p, i
Do 4 problems