vahemikud
Vahemikud, or intervals in English, are fundamental concepts in mathematics used to describe sets of real numbers. They represent a continuous portion of the number line. There are several types of intervals, distinguished by whether the endpoints are included or excluded.
An open interval, denoted as (a, b), includes all real numbers strictly between a and b, meaning
Half-open or half-closed intervals combine these notations. A left-open, right-closed interval is written as (a, b]
Intervals can also be unbounded. A ray extending infinitely to the right and including its starting point
Understanding intervals is crucial for various mathematical topics, including calculus, inequalities, and function domains. They provide