Precalculus Examples

$\log (\frac{6 \sqrt{a}}{b^{9} {(c - 1)}^{\frac{1}{5}}})$

Step 1

Rewrite $\log (\frac{6 \sqrt{a}}{b^{9} {(c - 1)}^{\frac{1}{5}}})$ as $\log (6 \sqrt{a}) - \log (b^{9} {(c - 1)}^{\frac{1}{5}})$ .

$\log (6 \sqrt{a}) - \log (b^{9} {(c - 1)}^{\frac{1}{5}})$

Step 2

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

$\log (6 a^{\frac{1}{2}}) - \log (b^{9} {(c - 1)}^{\frac{1}{5}})$

Step 3

Rewrite $\log (6 a^{\frac{1}{2}})$ as $\log (6) + \log (a^{\frac{1}{2}})$ .

$\log (6) + \log (a^{\frac{1}{2}}) - \log (b^{9} {(c - 1)}^{\frac{1}{5}})$

Step 4

Expand $\log (a^{\frac{1}{2}})$ by moving $\frac{1}{2}$ outside the logarithm.

$\log (6) + \frac{1}{2} \log (a) - \log (b^{9} {(c - 1)}^{\frac{1}{5}})$

Step 5

Rewrite $\log (b^{9} {(c - 1)}^{\frac{1}{5}})$ as $\log (b^{9}) + \log ({(c - 1)}^{\frac{1}{5}})$ .

$\log (6) + \frac{1}{2} \log (a) - (\log (b^{9}) + \log ({(c - 1)}^{\frac{1}{5}}))$

Step 6

Expand $\log (b^{9})$ by moving $9$ outside the logarithm.

$\log (6) + \frac{1}{2} \log (a) - (9 \log (b) + \log ({(c - 1)}^{\frac{1}{5}}))$

Step 7

Expand $\log ({(c - 1)}^{\frac{1}{5}})$ by moving $\frac{1}{5}$ outside the logarithm.

$\log (6) + \frac{1}{2} \log (a) - (9 \log (b) + \frac{1}{5} \log (c - 1))$

Step 8

Simplify each term.

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Step 8.1

Rewrite $\log (6)$ as $\log (2 (3))$ .

$\log (2 (3)) + \frac{1}{2} \log (a) - (9 \log (b) + \frac{1}{5} \log (c - 1))$

Step 8.2

Rewrite $\log (2 (3))$ as $\log (2) + \log (3)$ .

$\log (2) + \log (3) + \frac{1}{2} \log (a) - (9 \log (b) + \frac{1}{5} \log (c - 1))$

Step 8.3

Combine $\frac{1}{2}$ and $\log (a)$ .

$\log (2) + \log (3) + \frac{\log (a)}{2} - (9 \log (b) + \frac{1}{5} \log (c - 1))$

Step 8.4

Combine $\frac{1}{5}$ and $\log (c - 1)$ .

$\log (2) + \log (3) + \frac{\log (a)}{2} - (9 \log (b) + \frac{\log (c - 1)}{5})$

Step 8.5

To write $9 \log (b)$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$\log (2) + \log (3) + \frac{\log (a)}{2} - (9 \log (b) \cdot \frac{5}{5} + \frac{\log (c - 1)}{5})$

Step 8.6

Combine $9 \log (b)$ and $\frac{5}{5}$ .

$\log (2) + \log (3) + \frac{\log (a)}{2} - (\frac{9 \log (b) \cdot 5}{5} + \frac{\log (c - 1)}{5})$

Step 8.7

Combine the numerators over the common denominator.

$\log (2) + \log (3) + \frac{\log (a)}{2} - \frac{9 \log (b) \cdot 5 + \log (c - 1)}{5}$

Step 8.8

Multiply $5$ by $9$ .

$\log (2) + \log (3) + \frac{\log (a)}{2} - \frac{45 \log (b) + \log (c - 1)}{5}$