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11/2/2017 www.matematicas.iespoetajulianandugar.es/HOJAS/LOG.HTM
http://www.matematicas.iespoetajulianandugar.es/HOJAS/LOG.HTM 1/2
Logarítmos.
1 Calcula.log2(25) = log2(210) = log2(25) = 5 log2(210) = 10Calcula.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) =
11/2/2017 www.matematicas.iespoetajulianandugar.es/HOJAS/LOG.HTM
http://www.matematicas.iespoetajulianandugar.es/HOJAS/LOG.HTM 2/2
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)