Precálculo Ejemplos

$\log_{a} (16) + \frac{2}{5} \cdot \log_{a} (18) - \frac{2}{5} \cdot \log_{a} (9) + \log_{a} (\frac{1}{2^{\frac{12}{5}}})$

Paso 1

Usa las propiedades de los logaritmos del producto, $\log_{b} (x) + \log_{b} (y) = \log_{b} (x y)$ .

$\frac{2}{5} \cdot \log_{a} (18) - \frac{2}{5} \cdot \log_{a} (9) + \log_{a} (16 \frac{1}{2^{\frac{12}{5}}})$

Paso 2

Simplifica cada término.

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Paso 2.1

Simplifica $\frac{2}{5} \log_{a} (18)$ al mover $\frac{2}{5}$ dentro del algoritmo.

$\log_{a} (18^{\frac{2}{5}}) - \frac{2}{5} \cdot \log_{a} (9) + \log_{a} (16 \frac{1}{2^{\frac{12}{5}}})$

Paso 2.2

Combina $\log_{a} (9)$ y $\frac{2}{5}$ .

$\log_{a} (18^{\frac{2}{5}}) - \frac{\log_{a} (9) \cdot 2}{5} + \log_{a} (16 \frac{1}{2^{\frac{12}{5}}})$

Paso 2.3

Reescribe $\frac{\log_{a} (9) \cdot 2}{5}$ como $\frac{2}{5} \log_{a} (9)$ .

$\log_{a} (18^{\frac{2}{5}}) - (\frac{2}{5} \log_{a} (9)) + \log_{a} (16 \frac{1}{2^{\frac{12}{5}}})$

Paso 2.4

Simplifica $\frac{2}{5} \log_{a} (9)$ al mover $\frac{2}{5}$ dentro del algoritmo.

$\log_{a} (18^{\frac{2}{5}}) - \log_{a} (9^{\frac{2}{5}}) + \log_{a} (16 \frac{1}{2^{\frac{12}{5}}})$

Paso 2.5

Combina $16$ y $\frac{1}{2^{\frac{12}{5}}}$ .

$\log_{a} (18^{\frac{2}{5}}) - \log_{a} (9^{\frac{2}{5}}) + \log_{a} (\frac{16}{2^{\frac{12}{5}}})$

Paso 3

Usa la propiedad del cociente de los logaritmos, $\log_{b} (x) - \log_{b} (y) = \log_{b} (\frac{x}{y})$ .

$\log_{a} (\frac{18^{\frac{2}{5}}}{9^{\frac{2}{5}}}) + \log_{a} (\frac{16}{2^{\frac{12}{5}}})$

Paso 4

Usa las propiedades de los logaritmos del producto, $\log_{b} (x) + \log_{b} (y) = \log_{b} (x y)$ .

$\log_{a} (\frac{18^{\frac{2}{5}}}{9^{\frac{2}{5}}} \cdot \frac{16}{2^{\frac{12}{5}}})$

Paso 5

Combinar.

$\log_{a} (\frac{18^{\frac{2}{5}} \cdot 16}{9^{\frac{2}{5}} \cdot 2^{\frac{12}{5}}})$

Paso 6

Mueve $16$ a la izquierda de $18^{\frac{2}{5}}$ .

$\log_{a} (\frac{16 \cdot 18^{\frac{2}{5}}}{9^{\frac{2}{5}} \cdot 2^{\frac{12}{5}}})$