In this Section we introduce the logarithm: log a b . The operation of taking a logarithm essentially reverses the operation of raising a number to a power. We will formulate the basic laws satisfied by all logarithms and learn how to manipulate expressions involving logarithms. We shall see that to every law of indices there is an equivalent law of logarithms. Although logarithms to any positive base are defined it is common practice to employ only two kinds of logarithms: logs to base 10 and logs to base e .


Learning Outcomes

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