jawablah dengan sistematis diket f(x) = 2x -5 dan g(x) = 3x + 1 tentukan a. (f o g)-1 (x) b. (g-1 of-1) (-3)

f(x) = 2x - 5
x = (y + 5)/2
f⁻¹(x) = (x + 5)/2

g(x) = 3x + 1
x = (y - 1)/3
g⁻¹(x) = (x - 1)/3

a) (f o g)⁻¹(x) = g⁻¹(x + 5)/2
= ((x + 5)/2 - 1)/3
= (x + 3)/6

b) (g⁻¹ o f⁻¹)(-3) = g⁻¹(- 3 + 5)/2
= g⁻¹(1)
= (1 - 1)/3
= 0