f (x) = 2x + 3 g(x) = x + 1 ( g of ) - pangkat 1 (x)

jawab

fungsi invrs

f(x)= 2x + 3
g(x)= x + 1

gof(x)=  g{ f(x) }
= g (2x + 3)
= 2x+ 3+ 1
= 2x + 4
y = 2x  + 4
2x = y - 4
x  = 1/2 (y - 4)

(gof)⁻¹(x)= 1/2 (x - 4)