Precalculus Examples

$\log (\frac{1}{2}) \cdot 128$

Step 1

Rewrite $\log (\frac{1}{2})$ as $\log (1) - \log (2)$ .

$(\log (1) - \log (2)) \cdot 128$

Step 2

Logarithm base $10$ of $1$ is $0$ .

$(0 - \log (2)) \cdot 128$

Step 3

Subtract $\log (2)$ from $0$ .

$- \log (2) \cdot 128$

Step 4

Multiply $128$ by $- 1$ .

$- 128 \log (2)$