College Algebra / Alg 429 · Atom · ~20 seconds
Common and Natural Logarithms
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A common logarithm is base 10, written log(x) with no base shown; a natural logarithm is base e, written ln(x).
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log(1000) = 3, since 10³ = 1000; ln(e) = 1, since e¹ = e. Two named bases, two shorthands.
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A baseless log in this course means base 10, per the anchor.
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