Precalculus Examples

$\log_{3} (\sqrt{7 x})$

Step 1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{7 x}$ as ${(7 x)}^{\frac{1}{2}}$ .

$\log_{3} ({(7 x)}^{\frac{1}{2}})$

Step 2

Expand $\log_{3} ({(7 x)}^{\frac{1}{2}})$ by moving $\frac{1}{2}$ outside the logarithm.

$\frac{1}{2} \log_{3} (7 x)$

Step 3

Rewrite $\log_{3} (7 x)$ as $\log_{3} (7) + \log_{3} (x)$ .

$\frac{1}{2} (\log_{3} (7) + \log_{3} (x))$

Step 4

Apply the distributive property.

$\frac{1}{2} \log_{3} (7) + \frac{1}{2} \log_{3} (x)$

Step 5

Combine $\frac{1}{2}$ and $\log_{3} (7)$ .

$\frac{\log_{3} (7)}{2} + \frac{1}{2} \log_{3} (x)$

Step 6

Combine $\frac{1}{2}$ and $\log_{3} (x)$ .

$\frac{\log_{3} (7)}{2} + \frac{\log_{3} (x)}{2}$