Jika f(x)= 4x-3 dan g(x)= 2- 5/x,maka (f•g)-¹(7)=a.-10b.-8c.-5d.-4e.-1​

Jawaban:

F(x) = 4x – 3

g(x)= 2 – (5/x)

fog(x) = 4{ 2 – (5/x)} – 3

fog(x)= 8 – 20/x – 3

fog(x)= 5 – (20/x)

(fog)⁻¹ {5- (20/x)} = x

5- 20/x = 7

-20/x = 12

x = -20/12

x = -5/3

(fog)⁻¹(7) = -5/3

Penjelasan dengan langkah-langkah:

Semoga membantu 😉