assalamualaikum mohon bantuannya ya kakak....

Materi : Fungsi Invers


f(x) = (4x + 1) / (x - 4)
y = (4x + 1) / (x - 4)
y(x - 4) = 4x + 1
xy - 4y = 4x + 1
xy - 4x = 4y + 1
x(y - 4) = 4y + 1
x = (4y + 1) / (y - 4)

jadi f⁻¹(x) = (4x + 1) / (x - 4) dengan x ≠ 4

f(x)=(4x+1)/(x-4)
y=(4x+1)/(x-4)
y(x-4)=4x+1
xy-4y=4x+1
xy-4x=4y+1
x(y-4)=4y+1
x=(4y+1)/(y-4)

jadi,f^-1(x)=(4x+1)/x-4) dgn x # 4

JADIKAN JAWABAN TERBAIK YA semoga membantu