Precalculus Examples

$\log_{b} (4) + 3 (\log_{b} (1 + x) - \frac{1}{2} \cdot \log_{b} (1 - x))$

Step 1

Simplify each term.

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Step 1.1

Multiply $- \frac{1}{2} \log_{b} (1 - x)$ .

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Step 1.1.1

Reorder $\log_{b} (1 - x)$ and $\frac{1}{2}$ .

$\log_{b} (4) + 3 (\log_{b} (1 + x) - (\frac{1}{2} \log_{b} (1 - x)))$

Step 1.1.2

Simplify $\frac{1}{2} \log_{b} (1 - x)$ by moving $\frac{1}{2}$ inside the logarithm.

$\log_{b} (4) + 3 (\log_{b} (1 + x) - \log_{b} ({(1 - x)}^{\frac{1}{2}}))$

Step 1.2

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

$\log_{b} (4) + 3 \log_{b} (\frac{1 + x}{{(1 - x)}^{\frac{1}{2}}})$

Step 1.3

Simplify $3 \log_{b} (\frac{1 + x}{{(1 - x)}^{\frac{1}{2}}})$ by moving $3$ inside the logarithm.

$\log_{b} (4) + \log_{b} ({(\frac{1 + x}{{(1 - x)}^{\frac{1}{2}}})}^{3})$

Step 1.4

Apply the product rule to $\frac{1 + x}{{(1 - x)}^{\frac{1}{2}}}$ .

$\log_{b} (4) + \log_{b} (\frac{{(1 + x)}^{3}}{{({(1 - x)}^{\frac{1}{2}})}^{3}})$

Step 1.5

Multiply the exponents in ${({(1 - x)}^{\frac{1}{2}})}^{3}$ .

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Step 1.5.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\log_{b} (4) + \log_{b} (\frac{{(1 + x)}^{3}}{{(1 - x)}^{\frac{1}{2} \cdot 3}})$

Step 1.5.2

Combine $\frac{1}{2}$ and $3$ .

$\log_{b} (4) + \log_{b} (\frac{{(1 + x)}^{3}}{{(1 - x)}^{\frac{3}{2}}})$

Step 2

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

$\log_{b} (4 \frac{{(1 + x)}^{3}}{{(1 - x)}^{\frac{3}{2}}})$

Step 3

Combine $4$ and $\frac{{(1 + x)}^{3}}{{(1 - x)}^{\frac{3}{2}}}$ .

$\log_{b} (\frac{4 {(1 + x)}^{3}}{{(1 - x)}^{\frac{3}{2}}})$