Question

Diketahui g(x) = 5 - akar x
Diketahui g pangkat -1 (b) = 1
Tentukan nilai b

Answer 1

G(x) = 5-√x
g⁻¹(b) = 1

g(x) = 5-√x
y    = 5-√x
√x  = 5-y
x    = √5-y
g⁻¹(x)  = √5-x

g⁻¹(b) = 1
g⁻¹(b) = √5-b
1= √5-b
1 = 5-b
b = 5-1
b=4