Question

F(x)=3+√x+2 maka nilai dari f-1(1)

Answer 1

F (x) = 3 + √x+2
y = 3 + √x+2
x = 3 + √y+2
√y+2 + 3 = x
√y+2 = x - 3
y + 2 = (x - 3)²
y = (x - 3)² - 2

f⁻¹ (x) = (x - 3)² - 2
f ⁻¹ (1) = (1 - 3)² - 2
= (-2)² - 2
= 4 - 2
= 2