### Ranges and Codomains

Labels: math

To view the post on a separate page, click: at 9/27/2009 01:17:00 AM (the permalink).

I take a conservative, evangelical, economistical look at things. I will be posting intermittently, for reference rather than daily reading. My Wordpress site from before 30 September 2007 is at http://rasmusen.org/x. It is searched from the search engine below(not above).

I just learned a useful math term: CODOMAIN. Consider the function f(x) = 3 +5x as defined over the intervals of x in [0, 10] and f(x) in [0, \infinity). The DOMAIN is [0,10]. The RANGE is [3, 50]. The CODOMAIN is [0, \infinity). This mapping is one-to-one, but not onto, so the range and codomain are not identical.

Labels: math

To view the post on a separate page, click: at 9/27/2009 01:17:00 AM (the permalink).

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