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EXPLAIN LOGARITHMIC PROPERTIES WITH EXAMPLES |
Algebraic Properties of Logarithms The following identities hold for any positive a ? 1 and any positive numbers x and y. (a) loga(xy) = logax + logay eg: log216 = log28 + log22 (b) loga x/y = logax - logay eg: log2 5/3 = log25 - log23 (c) loga(xr) =r logax eg: log2(65) = 5 log26 (d) logaa = 1, loga1 = 0 eg: log22 = 1 log31= 0 (e) loga 1/x = - logax eg: log2(1/3) = -log23 |