When restricted to the field of real numbers, the square root of a negative number is undefined, as no real number exists which, when squared, equals a negative number.

Learn what 'undefined' means in mathematics with simple explanations, examples, and quizzes. Discover why division by zero is undefined and more! Perfect for elementary students.

In mathematics, undefined means a term that is mathematically inexpressible, or without meaning. Anything divided by zero is considered undefined by the rules of mathematics.

Revisiting the problems of dividing any number by zero and dividing zero by zero. Using general mathematical considerations, we see why those are undefined and indeterminate problems.

In mathematics, 'undefined' refers to a value that does not have meaning or cannot be determined within a given context. When simplifying rational expressions, an undefined expression occurs …

In various branches of mathematics, certain concepts are introduced as primitive notions (e.g., the terms "point", "line" and "plane" in geometry). As these terms are not defined in terms of other …

Dec 3, 2025 · An expression in mathematics which does not have meaning and so which is not assigned an interpretation. For example, division by zero is undefined in the field of real numbers.

In mathematics, the term undefined refers to a value, function, or other expression that cannot be assigned a meaning within a specific formal system.

Sep 16, 2025 · In this deep dive, we’ll unravel the enigmatic nature of the Undefined (mathematical concept), journeying through the forbidden operation of division by zero, …

Undefined is a term used when a mathematical result has no meaning. More precisely, undefined "values" occur when an expression is evaluated for input values outside of its domain.