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Problem

D=[104200111]\text D = \left[\begin{array}{rrr}-1 & 0 & 4 \\ 2 & 0 & 0 \\ -1 & 1 & -1\end{array}\right]
What is the determinant of D?
  • 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
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