ALISON BOWLING LOGARITHMS. LOGARITHMS (BASE 10) 10 0 = 1log 10 1 = 0 10 1 = 10log 10 10 = 1 10 2 = 100log 10 100 = 2 10 3 = 1000log 10 1000 = 3 10 -1.

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Presentation transcript:

ALISON BOWLING LOGARITHMS

LOGARITHMS (BASE 10) 10 0 = 1log 10 1 = = 10log = = 100log = = 1000log = =.1log 10.1 = =.01log = =.001log = =.0001log = -4 Note: Log x where X <= 0 is undefined

LOGARITHMS (BASE E) Euler’s number, e = …. e x : exponential function e is of eminent importance in mathematics (alongside  ) e 1 = ….ln (2.718) = 1 e 2 = 7.39ln (7.39 ) = 2 e -2 = 1/7.39 =.135ln (0.135) = -2 In general, if y = e x thenln (y) = x

PROPERTIES OF LOGARITHMS