Precalculus Examples

$- (\log (3.9) + \log (10^{- 4}))$

Step 1

Use the product property of logarithms, $\log_{b} (x) + \log_{b} (y) = \log_{b} (x y)$ .

$- \log (3.9 \cdot 10^{- 4})$

Step 2

The result can be shown in multiple forms.

Scientific Notation:

$- \log (3.9 \cdot 10^{- 4})$

Expanded Form:

$3.40893539$