1. a log f(x) =
a log p
f (x) = p
contoh :
3 log (x + 6) = 3
log 9
(x + 6) = 9
x = 9 – 6
x = 3
2. a log f(x) =
a log g(x)
f (x) = g(x)
contoh :
2 log (3x - 6) = 2 log (x+8)
3x – 6 = x + 8
3x – x = 8 + 6
2x = 14
x = 7
3. a log f(x) =
b log (x)
f (x) = 1
contoh :
2 log (x + 5) = 3
log (x + 5)
(x + 5) = 1
x = 1 - 5
x = -4
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