Jawab ini ya gengssss

5. f(x) = 2x – 1
y = 2x – 1
2x = y + 1
x = 1/2 (y + 1)
f^(-1)(y) = 1/2 (y + 1)
f^(-1)(x) = 1/2 (x + 1)

6. f(x) = (x + 2)/3
y =  (x + 2)/3
3y = x + 2
x = 3y – 2
f^(-1)(y) = 3y – 2
f(-1)(x) = 3x – 2

7. f(x) = -2 + √x
y = -2 + √x
√x = y + 2
(√x)² = (y + 2)²
x = y² + 4y + 4
f^(-1)(y) = y² + 4y + 4
f^(-1)(x) = x² + 4x + 4

8. f(x) = 3x² + 1
y = 3x² + 1
3x² = y – 1
x² = 1/3 (y – 1)
x = [√(y – 1)/√3], x = –[√(y – 1)/√3]
f^(-1)(y) = [√(y – 1)/√3], -[√(y – 1)/√3]
f^(-1)(x) = [√(x – 1)/√3], -[√(x – 1)/√3]