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a)
ln(125)/ln(√5) = x
3 = x
b)
ln(81)/lnx = -4
ln(81)/-4 = ln(x)
-1.099 = ln(x) (aplicamos función exponencial)
x =
x = 0.333
c)
ln(0.25)/ln(√2) = x
x = -4
d)
ln(x³)/ln(2) = 6
1.442ln(x³) = 6
ln(x³) = 4.16 (aplicamos la función exponencial)
x³ =
x³ = 64.128
x =
x = 4