Back دالة حقيقية المستقر Arabic Funció real Catalan فانکشنی ڕاستەقینە CKB Reellwertige Funktion German Función real Spanish تابع حقیقی FA Fonction numérique French פונקציה ממשית HE Valós értékű függvény Hungarian 実数値関数 Japanese
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| Function |
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| x ↦ f (x) |
| History of the function concept |
| Types by domain and codomain |
| Classes/properties |
| Constructions |
| Generalizations |
| List of specific functions |
In mathematics, a real-valued function is a function whose values are real numbers. In other words, it is a function that assigns a real number to each member of its domain.
Real-valued functions of a real variable (commonly called real functions) and real-valued functions of several real variables are the main object of study of calculus and, more generally, real analysis. In particular, many function spaces consist of real-valued functions.