Jawaban

05. 1/-6l

06. 4

Penjelasan dengan langkah-langkah:

05. f(x) = 2x - 1

4x + 1

y = 2x - 1

4x + 1

y (4x + 1) = 2x - 1

4xy + y = 2x - 1

4xy - 2x = - 1 - y

x (4y - 2) = - 1 - y

x = - 1 - y

4y - 2

f (x) -¹ = - 1 - x

4x - 2

f (-2)-¹ =- 1 -(-2)

4(-2) - 2

= 1

- 6

Cara mudah : f(x) = ax - b

cx + d

Maka : f(x) = - dx - c

bx - a

06. f(x) = x² - 6x + 10

y = x² - 6x + 9 + 1

y = (x - 3)² + 1

(x - 3)² = y - 1

x - 3 = √(y - 1)

x = √(y - 1) + 3

f(x)-¹ = √(x - 1) + 3

f(2)-¹ = √(2 - 1) + 3

= √1 + 3

= 1 + 3 = 4