Uji Kompetensi Akhir Bab 1 : Bentuk Pangkat, Akar, dan Logaritma
Matematika Sukino Kelas X KTSP 2006
31.
(a log b - c log b) . log b
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log (a/c) . c log b . a log b
dapat disederhanakan menjadi ...
a. 2
b. 1
c. 0
d. -1
e. -2
Jawaban : D
(a log b - c log b) . log b
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log (a/c) . c log b . a log b
(a log b . log b - c log b . log b)
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(log a - log c) . c log b . a log b
(a log b . log b - c log b . log b)
-------------------------------------------------------------------------
(log a c log b . a log b - log c . c log b . a log b)
(a log b . log b - c log b . log b)
-------------------------------------------------------------------------
(log a a log b c log b - log c . c log b . a log b)
(a log b . log b - c log b . log b)
-------------------------------------------------
(log b c log b - log b . a log b)
(a log b . log b - c log b . log b)
-------------------------------------------------
(c log b . log b - a log b log b )
(a log b . log b - c log b . log b)
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- (a log b . log b - c log b . log b)
= - 1
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