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Common and Natural Logarithms - Problem 2 515 views
Just like pi is approximately 3.14, lower case "e" in math is approximately 2.72. Both, however, are irrational (that is, non-terminating, non-repeating decimals.) "e" is so important and commonly used in finance and population growth that it gets its own log, called the natural log, which is notated ln.
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