Respuestas

  • Usuario de Brainly
2013-12-11T05:33:09+01:00
9) Log(5) (1/125) =X  <=> 5^x = 1 / 5^3 <=> 5^x = 5^(-3) <=> x = -3..Rta

10) Log(16)(1/2) = X <=> 16^x = 1/2 <=> 2^(4x) = 2^(-1) <=> 4x = -1 <=> x = - 1/4..Rta

11) Log(x) (9) =2 <=> x^2 = 9 <=> x^2 = 3^2 <=> x = 3..Rta.
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12) Log(x) (5) = 1/2 <=> x^(1/2) = 5 <=> (x^(1/2)^2 = (5)^2 <=> x = 25..RTa

13) Log(x) (1/25) = -2 <=> x^(-2) = 1 /5^2 <=> x^-2 = 5^-2 <=> x = 5..RTa.

14) Log(x) (1/3) = 1/2 <=> x ^(1/2) = 1/3 <=> (x^(1/2))^2 = (1/3)^2 <=> x = 1/9.RTa

15) Log(x) (1/8) = -3 <=> x^(-3) = 1/8 <=> x^(-3) = 1/2^3
....<=> x^(-3) = 2^(-3) <=> x = 2

16) Log(x) (16) = -4 <=> x^(-4) = 16 <=> x^(-4) = 4^2 <=> x^(-2^2) = (2^2)^2...
.... 1 / x^(2^2) = 1 / (2^2)^2 <=> x = 1/2..Rta.

17) Log(2) (x) = 3 <=> 2^3 = x <=> x = 8 ..RTa.

Saludos.
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