Matematika

Pertanyaan

sederhanakan
1. 2log 16 + 3log 27 + 5log 1/625
2. 3log 27 + 5log 1/25 - log 0,0001
3. 7log 5. 5 log 6 6log 49
4. 7log 1/49 7log 3 3 log 5
5. 4log 9 . 3log 125 . 25log 16
6. 1/2log 9 . 1/3log 7 . 49log 32
7. 2log 3 . 3log 5 . 5log 6 . 6log 8

1 Jawaban

  • 1. 2log 16 + 3log 27 + 5log 1/625 = 4 + 3 + (-4) = 3.
    2. 3log 27 + 5log 1/25 - log 0,0001 = 3 + (-2) - (4) = -3.
    3. 7log 5. 5 log 6. 6log 49 = 7log 49 = 2.
    4. 7log 1/49 .7log 3. 3 log 5 = 7log 1/49 . 7log 5 = -2. 7log 5
    5. 4log 9 .3log 125 . 25 log 16 = 4log3² . 3log 5³. 5²log 4² = 2(4log 3). 2(3log5) . 5log4 = 4(4log4) = 4(1) =4.
    6. 1/2log 9 . 1/3log 7 . 49log 32 =
    7. 2log 3 . 3log 5 . 5log 6 . 6log 8 = 2log 8 = 3.

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