diketahui f(x)=16x+30,g(x)=x-3,h(x)=2x+4 tentukan(gofoh)-1(2)

jawab

fogoh(x) = fog {h(x)}
= f og (2x +4)
= f { 2x+ 4 - 3 }
= f (2x+1)
= 16(2x+1) +30
fogoh(x) =  32x + 46
(fogoh)⁻¹(32x + 46) = x
fogoh)⁻¹ (2)

32x + 46 = 2
32x = - 44
x = -  44/32 = - 11/8