jika f(3x - 5) = 7x +2, maka f pangkat -1 (x) =

jawab

f(3x - 5) = 7x + 2

f⁻¹ (7x + 2) =  3x - 5
f⁻¹ (x) = 3  {1/7 (x - 2)} - 5
f⁻¹ (x) = 3/7 (x -2)- 5
f⁻¹ (x) = 1/7 { 3(x - 2) - 35} = 1/7 (3x - 6 - 35)
f⁻¹ (x) = 1/7 (3x - 41)