f(x) = 5x +7/x-10 .nilai f^1 (10) adalah ..

Kelas 10 Matematika
Bab Fungsi Komposisi

f(x) = (ax + b)/(cx + d)
f⁻¹ (x) = (-dx + b)/(cx - a)

f(x) = (5x + 7)/(x - 10)
f⁻¹ (x) = (10x + 7)/(x - 5)
f⁻¹ (10) = (10 . 10 + 7)/(10 - 5)
f⁻¹ (10) = 107/5
f⁻¹ (10) = 21 2/5