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Base 'e' and Natural Logarithms
To solve exponential equations or inequalities involving base e, take the natural log (ln) of both sides.
To solve natural log equations or inequalities, write each side as a power of e. Always check for extraneous solutions -- values which result in taking the logarithm of a non-positive value in the original equation or inequality. Exclude such values from the solution set.
Base 'e' and Natural Logarithms
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Carleen Eaton
Grant Fraser



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