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Unformatted text preview: , which is read the set of all real values y such that y . Using y instead of x is more consistent with our graphing conventions, and it helps us avoid confusion with the domain. Note: denotes set membership. Technical Note : We say that f maps the domain R to the codomain R , or that f maps R to itself. Using notation, we write f : R R . This is because f assigns a real number output (i.e., a member of the codomain) to each real number input in the domain. The range is a subset of the codomain. In fact, here, the range is a proper subset of the codomain, because not every real number in the codomain is assigned. In particular, the negative reals are not assigned....
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This note was uploaded on 12/29/2011 for the course MATH 150 taught by Professor Sturst during the Fall '10 term at SUNY Stony Brook.
 Fall '10
 sturst
 Real Numbers

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