9. Below is the graph of f(x). For what values of x is fx) concave down? a. x <-1 c. x>1 d. x <-1 and x > 1 b. -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.