Functions that have one range value for each domain value and one domain value for each range value {bijective} can exchange domain and range {inverse function}. Reciprocals of relations can be relations {inverse relation}: x * R^1 * y = y * R^-1 * x. In the plane, inverse-function graphs reflect function graphs around line at 45-degree angle to x-axis and y-axis.
Mathematical Sciences>Algebra>Function>Kinds
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Date Modified: 2022.0224