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In mathematics, magnitude refers to the size or extent of a quantity. It is a measure of how large something is, without regard to its direction. For real numbers, complex numbers, and vectors, magnitude represents the absolute value or displacement from zero or the origin. For instance, the absolute value of a real number a is a itself if a is positive or zero, and -a if a is negative. For vectors, which have both magnitude and direction, the magnitude is often represented by vertical bars, such as123|v|, and is always a nonnegative scalar quantity. This concept is crucial in fields like physics and engineering for describing quantities such as force, velocity, and displacement.12

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