Tentukan fungsi inver dari 1. f(x) = 8x³ 2. f(x) = 3x/4-2x

f(x) = y
f-¹ (x) = x

1) f(x) = 8x³
y = 8x³
x³ = y / 8
x = ³√(y/8)
f-¹(x) = ³√(y/8)

2) f(x) = (3x) / (4 - 2x)
y = (3x) / (4 - 2x)
y (4 - 2x) = 3x
4y - 2xy = 3x
3x + 2xy = 4y
x (3 + 2y) = 4y
x = (4y) / (3 + 2y)
f-¹(x) = 4x / (3 + 2x)