The length x of a rectangle is decreasing at a rate of 5cm/seconds and the width y increasing at a rate of 4cm/seconds. When x = 10cm and y= 6cm, i) Find the rate at which the perimeter of the rectangle is changing. ii) Find the rate of change of the area of the rectangle.

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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.