Domains of Combination Functions

I made a two-part video showing you how to find/predict the domains of combination functions f+g, f-g, fg, f/g, and g/f. The Part 1 video goes over how to analyze just the domains of f and g. The Part 2 video then shows you how those domains lead you to the domains of the combination functions.

http://www.blip.tv/file/4851776 (Part 1: 5 minutes and 29 seconds long)
http://www.blip.tv/file/4853239 (Part 2: 7 minutes and 52 seconds long)

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