# The determinant and inverse of a 2 by 2 matrix

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(204 KB|8 pages)
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A 2 by 2 matrix with a, b, c and d as the elements of the matrix has its determinant to be the result: ad – bc.
Generally, the determinant of A can be represented as det(A) or |A|.
At the end of this lesson, the student should be able to
i.) Identify a 2 by 2 matrix
ii.) Find the determinant of a 2 by 2 matrix

ii.) Use the determinant to find the inverse of a 2 by 2 matrix
iii.) Verify that the product of matrix A and its inverse is a unit matrix

Total Pages
8 pages
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Teaching Duration
2 days
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