## Precalculus: Mathematics for Calculus, 7th Edition

$k = \ln m$
$Write$ $the$ $equation$ $in$ $logarithmic$ $form:$ $e^k = m$ Exponential form to natural log form: $e^b = a \rightarrow \ln a = b$ [e stands for euler's number] Plug in $k$ for b and $m$ for a $$e^k = m \rightarrow \ln m = k$$ $$k = \ln m$$