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same process with subtraction, except vector a + vector b is now vector a + vector -b

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used when rotating polygons about origin.

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used when trying to reflect matrices.

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Multiplicative Inverse and determinate equation:

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Multiplicative Inverse and determinate equation:

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Vector - a quantity possessing both magnitude and direction, represented by an arrow the direction of which indicates the direction of the quantity and the length of which is proportional to the magnitude.

magnitude - size; extent; dimensions

additive inverse matrix - The matrix obtained by changing the sign of every matrix element. The additive inverse of matrix A is written –A. Note: The sum of a matrix and its additive inverse is the zero matrix.

Multiplicative inverse matrix- When A is multiplied by A⁻¹ the result is the identity matrix I. Non-square matrices do not have inverses.

determinant - In linear algebra, the determinant is a useful value that can be computed from the elements of a square matrix. used to find multi. inverse.