Express the equation in logarithmic form.

e  ^x = 3   ?

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

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