Functions (part 4)

Learn more: http://www.khanacademy.org/video?v=rbt51hXmzig
An example of a functions problem submitted by a youtube viewer

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Length: 9 minutes

Domain of a function

Length: 7 minutes

Proof: log a + log b = log ab

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Proof: A(log B) = log (B^A), log A - log B = log (A/B)