1. Tentukan HP dari setiap persamaan berikut.
g.
log (x - 1) + log (x - 3) = log (x - 1)
log (x - 1)(x - 3) = log (x - 1)
(x - 1)(x - 3) = (x - 1)
x2 - 4x + 3 = x - 1
x2 - 5x + 4 = 0
(x - 4)(x - 1) = 0
x = 4
atau
x = 1 (tidak termausk, karena domain logaritma harus > 0)
jadi HP : x = 4
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