Precalculus Examples

$\log (x) - 3 \log (y) + 4 \log (z)$

Step 1

Simplify each term.

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Step 1.1

Simplify $- 3 \log (y)$ by moving $3$ inside the logarithm.

$\log (x) - \log (y^{3}) + 4 \log (z)$

Step 1.2

Simplify $4 \log (z)$ by moving $4$ inside the logarithm.

$\log (x) - \log (y^{3}) + \log (z^{4})$

Step 2

Use the quotient property of logarithms, $\log_{b} (x) - \log_{b} (y) = \log_{b} (\frac{x}{y})$ .

$\log (\frac{x}{y^{3}}) + \log (z^{4})$

Step 3

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

$\log (\frac{x}{y^{3}} z^{4})$

Step 4

Combine $\frac{x}{y^{3}}$ and $z^{4}$ .

$\log (\frac{x z^{4}}{y^{3}})$