## Precalculus: Mathematics for Calculus, 7th Edition

a.) $\ln 2 = x$ b.) $\ln y = 3$
$Express$ $the$ $equation$ $in$ $logarithmic$ $form:$ a.) $e^x = 2$ b.) $e^3 = y$ Exponential form to natural log form: $e^b = a \rightarrow \ln a = b$ [Note: e means euler's number, NOT a variable] a.) $e^x = 2$ Plug in x for b and 2 for a $e^x = 2 \rightarrow \ln 2 = x$ b.) $e^3 = y$ Plug in 3 for b and y for a $e^3 = y \rightarrow \ln y = 3$