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Reciprocal

Concept

Reciprocal

The reciprocal of a rational number is found by switching the numerator and denominator of the number.

Number Reciprocal

The reciprocal of a number is also known as its multiplicative inverse, since the product of any rational number and its reciprocal is equal to A similar identity to this one is the additive inverse.

Concept

Negative Reciprocal

The negative reciprocal of a number is the reciprocal with changed sign.

Number Negative Reciprocal

An example of this is perpendicular lines where their slopes are negative reciprocals of each other.