maka f⁻¹(x) =
2x/1 – x
Pembahasan:
Gunakan rumus invers fungsi:
f(x) = ax + b ⇒ f⁻¹(x) = –dx + b
cx + d cx – a
f(x) = x
x + 2
f⁻¹(x) = –2x
x – 1
= 2x
1 – x