Question

Jika f (3x+1) = 9x + 1, maka f (2) =.....

Answer 1

Kita akan cari nilai x sehingga 3x+1=2:

Jadi:

Answer 2

Materi : Fungsi Aljabar
Mapel : Matematika

f (3x+1) = 9x+1

3x + 1 = x'
3x = x' - 1
x = (x' - 1)/3

f(x) = 9((x-1)/3) + 1
f(x) = (9x-9)/3 + 1
f(x) = (9x - 9 + 3)/3
f(x) = (9x - 6)/3

f(2) = (9(12) - 6)/3
f(2) = 34

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