2 log x = 4 + log x / 10?
2 log x = 4 + log x / 10.
2 log x = 4 + log x / 10.
En resumen
2 log x = 4 + log x / 10 logx ^ 2 = 4 + logx / 10 logx ^ 2 = 4 + logx - log10 logx ^ 2 = 4 + logx - 1 logx ^ 2 - logx = 4 - 1 logx ^ 2 / x = 3 logx = 3.
Lubaranoaluchotron
2 log x = 4 + log x / 10
logx ^ 2 = 4 + logx / 10
logx ^ 2 = 4 + logx - log10
logx ^ 2 = 4 + logx - 1
logx ^ 2 - logx = 4 - 1
logx ^ 2 / x = 3
logx = 3.
Para este tipo de ejercicios tienes que aplicar las propiedades de logaritmos. Log a + log b = log (ab) log x – log y = log(x / y) log a – log x – log y = log a - (log x + log y) = log a - (log (xy)) = log (a / xy) log…
1) logx - 1 / 2 × logx ^ (1 / 2) = 1 logx ^ (1 / 2) = 1 1 / 2 × logx = 1 logx = 2 10 ^ 2 = x x = 100 2)log(x - 3) / (2x + 1) = log(1 / 4) (x - 3 ) / (2x + 1) = 1 / 4 4x - 12 = 2x + 1 2x = 13 x = 13 / 2 3)x = - 1 / 2 4)…