inverse

/(ˌ)in-ˈvərs/

Middle English, turned upside down, from Latin inversus, from past participle of invertere

adjective

  1. opposite in order, nature, or effect

  2. being an inverse function

noun

  1. something of a contrary nature or quality : opposite, reverse

  2. a proposition or theorem formed by contradicting both the subject and predicate or both the hypothesis and conclusion of a given proposition or theorem

  3. inverse function; also : an operation (such as subtraction) that undoes the effect of another operation

noun

  1. a function that is derived from a given function by interchanging the two variables

y = ∛x is the inverse function of y = x{sup}3{/sup}