3log 25 x 5log 9 = ....
Tentukan nilai logaritma berikut:
3log 25 x 5log 9 = ....
2log 2 x 2log 125 = ....
Pembahasan:
3log 25 x 5log 9 = 3log 52 x 5log 32
= 2 . 2. 3log 5 x 5log 3
= 4
2log 2 x 2log 125 = 1 x 2log 53
= 3 2log 5
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