Precalculus Examples

$\log_{4} (\frac{\sqrt{z}}{64})$

Step 1

Rewrite $\log_{4} (\frac{\sqrt{z}}{64})$ as $\log_{4} (\sqrt{z}) - \log_{4} (64)$ .

$\log_{4} (\sqrt{z}) - \log_{4} (64)$

Step 2

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{z}$ as $z^{\frac{1}{2}}$ .

$\log_{4} (z^{\frac{1}{2}}) - \log_{4} (64)$

Step 3

Expand $\log_{4} (z^{\frac{1}{2}})$ by moving $\frac{1}{2}$ outside the logarithm.

$\frac{1}{2} \log_{4} (z) - \log_{4} (64)$

Step 4

Logarithm base $4$ of $64$ is $3$ .

$\frac{1}{2} \log_{4} (z) - 1 \cdot 3$

Step 5

Multiply $- 1$ by $3$ .

$\frac{1}{2} \log_{4} (z) - 3$

Step 6

Combine $\frac{1}{2}$ and $\log_{4} (z)$ .

$\frac{\log_{4} (z)}{2} - 3$