Find |A-11. Begin by finding A-1, and then evaluate its determinant. Verify your result by finding |A| and then applying the formula |A-1| = 1 0 1 A = 3 -1 3 1 -3 9 JA-1 =

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Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.