# How do you solve e^-x = 0.04?

Oct 23, 2015

By taking natural logs of both sides:

#### Explanation:

${e}^{- x} = 0.04$

Taking natural logs $\Rightarrow$

$\ln {e}^{- x} = \ln \left(0.04\right)$

$- x \cancel{\ln e} = - 3.219$

$x = 3.219$