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log 4​ (2x)−2log 4​ (4)=1

Question

log 4​ (2x)−2log 4​ (4)=1

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Solution

Claro, vamos a resolver la ecuación paso a paso:

Dada la ecuación: log4(2x)2log4(4)=1 \log_4 (2x) - 2 \log_4 (4) = 1

  1. Utilizamos la propiedad de los logaritmos que dice que alogb(c)=logb(ca) a \log_b (c) = \log_b (c^a) : log4(2x)log4(42)=1 \log_4 (2x) - \log_4 (4^2) = 1

  2. Simplificamos 42 4^2 a 16: log4(2x)log4(16)=1 \log_4 (2x) - \log_4 (16) = 1

  3. Utilizamos la propiedad de los logaritmos que dice que logb(a)logb(c)=logb(ac) \log_b (a) - \log_b (c) = \log_b \left( \frac{a}{c} \right) : log4(2x16)=1 \log_4 \left( \frac{2x}{16} \right) = 1

  4. Simplificamos la fracción: log4(x8)=1 \log_4 \left( \frac{x}{8} \right) = 1

  5. Para eliminar el logaritmo, utilizamos la definición de logaritmo: si logb(a)=c \log_b (a) = c , entonces bc=a b^c = a : 41=x8 4^1 = \frac{x}{8}

  6. Simplificamos: 4=x8 4 = \frac{x}{8}

  7. Multiplicamos ambos lados de la ecuación por 8 para despejar x x : 4×8=x 4 \times 8 = x

  8. Simplificamos: x=32 x = 32

Por lo tanto, la solución de la ecuación es: x=32 x = 32

This problem has been solved

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