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Algebra (all content)

Course: Algebra (all content) > Unit 20

Lesson 11: Determinant of a 2x2 matrix
Math
Algebra (all content)
Matrices
Determinant of a 2x2 matrix
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Determinant of a 2x2 matrix

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Problem

C=[−1452]\text C = \left[\begin{array}{rr}-1 & 4 \\ 5 & 2\end{array}\right]
What is the determinant of start text, C, end text?
  • 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, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
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