Kelas X
Bab 2 Fungsi, Persamaan, dan Pertidaksamaan Logaritma
Matematika Sukino Kelas X
Kunci Jawaban Matematika Sukino
Soal dan Pembahasan Matematika Sukino Kelas X
Bagian A
12. Nilai dari ekspresi
3log √6
----------------------- = ...
(3log 18)2 - (3log 2)2
a. 2-3
b. 2-1
c. 20
d. 21
e. 23
Jawaban : A
3log √6
-------------------------- =
(3log 18)2 - (3log 2)2
3log 61/2
-------------------------- =
(3log 9. 2)2 - (3log 2)2
1/2 . 3log (3 . 2)
---------------------------------- =
(3log 32 + 3log2)2 - (3log 2)2
1/2 . 3log (3 . 2)
---------------------------------- =
(2 + 3log2)2 - (3log 2)2
1/2 . (3log 3 + 3log 2)
------------------------------------------------------ =
(4 + 3log22 + 43log 33log 2) - (3log 2)2
1/2 . (1 + 3log 2)
---------------------------------------- =
(4 + 3log22 + 4 3log 2 - 3log2 2)
1/2 . (1 + 3log 2)
---------------------- =
(4 + 4 3log 2)
1/2 . (1 + 3log 2)
---------------------- = 1/8 = 2-3
4 (1 + 3log 2)
>> soal no 13
No comments:
Post a Comment