Contoh
Sumber
Jawab
3( – 2x
+ 2) = 3x
1
– 6x + 6 = 3x
+ 1
– 6x
– 3x = 1 – 6
Jawaban : C
Contoh
Jika 2 log
x + 4 log √y = 4
log z2, maka z2 = ...
A.
x√y
B.
x2 √y
C. xy
D. x ∜y
E. x2 ∜y
Jawab
2 log x
+ 4 log √y = 4 log
z2
4 log x2
+ 4 log √y = 4 log
z2
4 log x2 · √y =
4 log z2 ⇒ z2 = x2
√y
Jawaban : B
Contoh
A.
2log
3
B.
3log 2
C.
4log 9
D.
(3log
2)2
E.
(2log
3)2
Jawab
= (2log
a × alog
3) × (2log
b × blog
3)
= 2log
3 × 2log
3
= (2log 3)2
Jawaban : E
Contoh
Jawab
Jawaban : E
Contoh
Jika
5 log 3 = a
dan 3 log 2 = b, 6 log 75 sama dengan
...
Jawab
log 2 = b log 3
= b (a log 5)
= ab log
5
Jawaban : E
Sumber
Labels:
Matematika
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