jika diketahui f(x) = x + 3 dan g(x) = 2x^2-x maka fungsi (gof)(x) adalah

Semoga Bermanfaat...

f(x) = x + 3
g(x) = 2x^2 - x
gof (x) = ?

gof (x) = g [f(x)]
= 2(x+3)^2 - (x+3)
= 2(x^2 + 6x + 9) - (x+3)
= 2x^2 + 12x + 18 - x - 3
= 2x^2 + 11x + 15

Jadi,
gof (x) = 2x^2 + 11x + 15


Semoga membantu :)