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Definitions
Question | Answer |
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What is an interval? | A interval is a set of real numbers with the property that any number that lies between two numbers in the set is also included in the set |
What is the domain of a function? | The domain of definition of a function is the set of "input" or argument values for which the function is defined. That is, the function provides an "output" or value for each member of the domain. |
What is an accumulation point? | A point x in a topological space X such that in any neighborhood of x there is a point of A distinct from x. |
Examples of intervals. | [0;5,5[ - 5<x<45 - ]-∞;3] |
Examples of domain. | 4/x-2 D: x-2≠0 x≠2 √(4x-3) D: 4x-3>=0 |