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inverse function

The English word “inverse function” has 1 meaning listed here.

noun

  1. For a given function f, another function, denoted f⁻¹, that reverses the mapping action of f; (formally) given a function f:X→Y, a function g:Y→X such that, ∀x∈X,f(x)=y⟹g(y)=x.
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