bagaimana caranya? mohon bantuannnya

jawab
fungsi
f(x) = 3x- 1
g(x) = 2x² -3
gof(x)= g { f(x)) = g (3x - 1)
gof(x)  =  2(3x -1)²  - 3 
gof(x) = 2 (9x²- 6x +1) - 3
gof(x) = 18x² -12x - 1

5
f(x)= (2x +3)/(x- 4)

f⁻¹ { (2x + 3)/(x - 4)} = x

(2x + 3)/(x - 4)= 1
2x+ 3 = x - 4
x = - 7

f⁻¹(1)= 7