KnowraSign functionLinked fromLinked fromThe 8 pages that link to Sign function, each with the reason it gives.All 8Broader topic 1Related 3Compared with 4Absolute valueRelated: Away from zero, it gives the derivative of the absolute-value function.Bisection methodRelated: Bisection uses endpoint signs to decide which half preserves the bracket.Bolzano's theoremRelated: The theorem turns opposite endpoint signs into a forced zero in between.