Ejercicios logaritmos

1. 11/2/2017 www.matematicas.iespoetajulianandugar.es/HOJAS/LOG.HTM
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Logarítmos.
1 Calcula.
log2(25) =
log2(210) =
log2(25) = 5
log2(210) = 10
Calcula.
log14(1410) =
log5(59) =
log14(1410) = 10
log5(59) = 9
Calcula.
log10(104·A) =
log10(104·A) = 4 + log10(A)
log10(108·B) = 8 + log10(B)
Calcula.
log4(44·A) =
log4(44·A) = 4 + log4(A)
log10(103·B) = 3 + log10(B)
Calcula.
log10(23 · 310) =
log10(23 · 310) = 3 · log10(2) + 10 · log10(3)
Calcula.
log10(57 · 35) =
log10(57 · 35) = 7 · log10(5) + 5 · log10(3)
Calcula.
log10(13824) =
log10(13824) = log10(29 · 33) = 9 · log10(2) + 3 · log10(3)
Calcula.
log10(140625) =
log10(140625) = log10(56 · 32) = 6 · log10(5) + 2 · log10(3)
Calcula.
log10(3125 / 6561) =

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log10(3125 / 6561) = log10(55 / 38) = 5 · log10(5) ­ 8 · log10(3)
Calcula.
log10(512 / 729) =
log10(512 / 729) = log10(29 / 36) = 9 · log10(2) ­ 6 · log10(3)