dik fungsi f(x)=3x-1 dan g(x)=2x pangkat2-3. komposisi fungsi (gof)(x) adalah

jawab

f(x) = 3x - 1
g(x)= 2x² - 3

gof(x) = g {f(x)} = g(3x -1)
g(3x-1)= 2 (3x-1)² -1
g(3x-1) = 2 (9x² -6x +1) - 1
g(3x-1) = 18x² -12x + 2 -1
g(3x-1) = 18x²-12x +1
gof(x) = 18x²-12x +1