
Pembahasan Soal Rumus Dasar Logaritma
Presentation
•
Mathematics
•
10th Grade
•
Medium
Dwie Sari
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7 Slides • 6 Questions
1
Pembahasan Soal Rumus Dasar Logaritma
By: Dwie Puspita Sari, S.Pd
2
Rumus Dasar Logaritma
Logaritma adalah suatu operasi invers atau kebalikan dari perpangkatan.
Jika diketahui suatu perpangkatan
ac=b maka bentuk tersebut dapat dituliskan dalam bentuk logaritma menjadi: a log b=c dengan a > 0 dan a ≠ 1.
3
Pembahasan Soal Rumus Dasar Logaritma
1. Tentukan nilai logaritma dari
a. 5log 625 → 54=625 → 4b. 3log 9 → 32=9 → 2
c. 31log 3 → (31)−1=3 → −1
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2. Nyatakan tiap bentuk pangkat berikut ini dengan menggunakan notasi logarima
a. 52=25 → 5log25=2
b. 6−2= 361 → 6 log 361=−2
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3. Nyatakan tiap bentuk logaritma di bawah ini dengan memakai notasi eksponen
c. 5 log 125=3 → 53=125
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KUIS
Berdasarkan pembahasan soal sebelumnya..
Silahkan kalian menjawab kuis berikut yaa :)
7
Multiple Select
Nilai logaritma dari
7log 49 adalah...4
3
2
1
8
Multiple Select
Nilai logaritma dari :
51 log125 adalah2
-2
3
-3
9
Multiple Select
Notasi logaritma dari:
5−2=251 adalah...5log25=−2
−2log (251)=5
5log(251)=−2
5 log 25=2
10
Multiple Select
Bentuk eksponen dari:
9 log 81=2 adalah...29
92
812
9−2
11
Multiple Select
Notasi eksponen dari:
31 log 3=−1 adalah...(31)−1
(31)−3
3−1
3(31)
12
Multiple Select
Nilai logaritma dari :
51 log125 adalah2
-2
3
-3
13
SEMANGAT BELAJAR YAA ... :)
Pembahasan Soal Rumus Dasar Logaritma
By: Dwie Puspita Sari, S.Pd
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