daerah asal fungsi f(×) = ×+1 log 3 adalah ...

f(x) = x + 1log 3

f(1) = 1 + 1 log 3
= 3 log 3 + 1 log 3
Catatan:
1 log 1 = 0 atau 1

f(2) = 2 + 1 log 3
= 1 log 1² + 1 log 3
=1 log 1²(3)
= 1 log 3
.
.


f(n) = n+ 1 log 3

Maka didapat
domain = {1,2,...,n}