Sumatif Matematika Logaritma Kelas 10
Quiz
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
Mutiara Dirga Agustina
Used 10+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Evaluasi: log_2(8)
1
2
4
3
Answer explanation
log_2(8) asks for the power to which 2 must be raised to get 8. Since 2^3 = 8, the answer is 3.
2.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Terapkan sifat: log_a(bc) = ?
log_a(b) - log_a(c)
log_a(bc) + log_a(a)
log_a(b) + log_a(c)
log_a(b) * log_a(c)
Answer explanation
Sifat logaritma menyatakan bahwa log_a(bc) = log_a(b) + log_a(c). Ini berarti logaritma dari hasil kali dua bilangan sama dengan jumlah logaritma dari masing-masing bilangan. Jadi, jawaban yang benar adalah log_a(b) + log_a(c).
3.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Ubah ke bentuk logaritma: 100 = 10^2
log10(100) = 3
log10(10) = 1
log10(1000) = 2
log10(100) = 2
Answer explanation
Untuk mengubah 100 = 10^2 ke bentuk logaritma, kita gunakan definisi logaritma: log10(100) = 2. Ini berarti 10 dipangkatkan 2 menghasilkan 100, sehingga pilihan yang benar adalah log10(100) = 2.
4.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Selesaikan untuk x: log_5(x) = 3
100
125
150
25
50
Answer explanation
Untuk menyelesaikan log_5(x) = 3, kita ubah ke bentuk eksponensial: x = 5^3. Menghitung 5^3 menghasilkan 125, jadi jawaban yang benar adalah 125.
5.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Gunakan logaritma: Sebuah populasi tumbuh dari 100 menjadi 400 dalam 5 tahun. Berapa tingkat pertumbuhannya?
50.00%
10.25%
28.77%
15.00%
Answer explanation
Tingkat pertumbuhan dapat dihitung dengan rumus logaritma: r = (ln(400) - ln(100)) / 5. Hasilnya adalah sekitar 0.2877 atau 28.77%. Jadi, jawaban yang benar adalah 28.77%.
6.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Evaluasi: log_10(0.01)
-2
-1
0
1
Answer explanation
Logarithm base 10 of 0.01 is asking what power 10 must be raised to in order to get 0.01. Since 0.01 is 10 raised to the power of -2 (10^-2 = 0.01), the answer is -2.
7.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Terapkan sifat: log_a(b/c) = ?
log_a(b) - log_a(c)
log_a(b) / log_a(c)
log_a(b) * log_a(c)
log_a(b + c)
Answer explanation
Sifat logaritma menyatakan bahwa log_a(b/c) = log_a(b) - log_a(c). Ini berarti logaritma dari pembagian sama dengan selisih logaritma dari pembilang dan penyebut. Jadi, jawaban yang benar adalah log_a(b) - log_a(c).
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