In mathematics, an injective function (also known as injection, or one-to-one function[1]) is a function f that maps distinct elements of its domain to distinct elements of its codomain; that is, x1 ≠ x2 implies …

One to one function is a special function that maps every element of the range to exactly one element of its domain i.e, the outputs never repeat. As an example, the function g (x) = x - 4 is a one to one …

Functions f for which equations of the form f (x) = k have at most one solution for each value of k (that is, each outcome k comes from only one input x) arise often in applications and possess a number of …

Nov 11, 2025 · A One-to-One function, also known as an Injective function, is a type of function defined over a domain and codomain that describes a specific type of relationship between them. In a One-to …

With the definition of a function in mind, let's take a look at some special "types" of functions. A function f from A to B is called one-to-one (or 1-1) if whenever f (a) = f (b) then a = b. No element of B is the …

What Is One to One Function? A one to one function (also called an injective function) is a function in which every output value is paired with only one unique input value. This means that no two different …

Dec 12, 2025 · Using the horizontal line test, determine whether the function f (x) = x 3 is one-to-one. The function is one-to-one. The function is not one-to-one. Determine whether the following function …