dik : f(x) = 2x+3 per x+5 g(x)=3x+1 dit: b) (gof)^-1(x) tolong dijawab dan dibantu ya makasih banyak ^^

3) dicari fog sama gof

dulu ya

fog = f(g(x)
fog = (x-1)+2
fog = x+1
fogoh= (fog(h(x)
= (2x)+1
= 2x+1
gof= g(f(x)
gof = (x+2)-1
gof = x+1
gofoh= gof(h(x)
= (2x)+1
= 2x+1

4)
[tex] fx = \frac{2x + 3}{x + 5} [/tex]
gx = 3x+1
dit gof
gof = g(f(x)
[tex]gof = 3( \frac{2x + 3}{x + 5} ) + 1 \\ = \frac{6x + 10}{ x + 5} [/tex]