Question

TOLONG DI JAWAB!!
tentukan nilai dari g(5) jika diketahui f(x) = x-2 dan (f o g)(x) = x(pangkat 2) - 4x - 1

Answer 1

F(x)= x - 2 --> f^-1(x) = x+2
fog(x) = x^2 - 4x - 1
g(x) =f^-1 o f0g(x)
g(x)= (x^2 -4x -1) +  2
g(5) = 5^2 - 20 +1 + 2
g(5) = 8