Express the equation in logarithmic form.

e  ^x = 3   ?

$$\begin{array}{rcl}
\\e^x &=& 3 \quad | \quad \ln{} \\
\ln{(e^x)} &=& ln{(3)}\\
x\ln{(e)} &=& ln{(3)} \quad | \quad \ln{(e)} = 1 \;! \\
x &=& ln{(3)}\\
x &=& 1.09861228867
\end{array}$$

$$\boxed{x=\ln{(3)}}$$