tentukan 2log12+2log6-2log5=
Matematika
joluis
Pertanyaan
tentukan 2log12+2log6-2log5=
1 Jawaban
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1. Jawaban andri77
sifat logaritma
alogb + alogc = alog(b.c)
alogb - alogc = alog(b/c)
alogb = logb/loga
=2log12 +2log6 - 2log5
=2log12 + 2log(6/5)
= 2log12 + 2log1,2
= 2log(12.1,2)
=2log14,4
= log14,4 / log2
= 1,15 / 0,3
= 3,83