Käänteistoimintoihin
Käänteistoimintoihin, also known as inverse functions in English, are a fundamental concept in mathematics. For a function to have a unique inverse, it must be bijective, meaning it is both injective (one-to-one) and surjective (onto). An injective function ensures that each output value corresponds to exactly one input value, while a surjective function guarantees that every possible output value is achieved by at least one input value.
If a function f maps an element x from a set A to an element y in
When dealing with real-valued functions, the graph of an inverse function f⁻¹ is a reflection of the
Not all functions possess an inverse. For instance, a function like f(x) = x² is not injective on