Jika f(x)=x+3 dan g(x)=2x+5 maka (gof)(x) adalah

[tex](gof)(x) = g(f(x)) \\ 2(x + 3) + 5 \\ 2x + 6 + 5 \\ 2x + 11 \\ 2x = - 11 \\ x = \frac{ - 11}{2} \\ x = - 5.5[/tex]

f ( x ) = x + 3
g (x ) = 2x +5
maka (g ° f ) (x)
= (g(f)) (x)
= 2x+5
= 2(x+3) +5
= 2x + 6 + 5
= 2x = 11
x = 11 per 2