Range: Difference between revisions

Revision as of 14:19, 15 December 2019

The range of a function $f:A\to B$ is the subset of $B$ given as $\{f(a)\mid a\in A\}$ , i.e., the set of elements of $B$ that arise as outputs of the function.

Examples:

Given $f:A\to B$ so that for every $x\in A:f=x^{2}$ in this case the range is a subset of $B$ encompassing all its positive real numbers.

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 Examples:
-Given <math>f:A \to B</math> so that for every <math>x\in A: f=x^2</math> in this case the range is a subset of <math>B</math> encompassing all its [[positive real numbers]].
+* Given <math>f:A \to B</math> so that for every <math>x\in A: f=x^2</math> in this case the range is a subset of <math>B</math> encompassing all its [[positive real numbers]].