Laws of Logarithms: ln(x^r) = r·ln(x)

In this video I go over another logarithm law and prove that ln(x^r) = r·ln(x) where r is a rational number. In this proof I use derivatives and integrals as opposed to my earlier video which I proved using the definition of ln(x) as the inverse of the exponential function, e^x.

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Fundamental Theorem of Calculus - Introduction and Part 1 of the Theorem: http://youtu.be/3o8Q6UJzJyk
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