1. diketahui = f (x) = 2x + 3 dan g (x) = 3x² - 1 tentukan A. fog (x) B. gof (x) C. fog (2) D. gof (-3) 2. diketahui fog (x) = -2x + 3 dan f (x) = 4x - 1 . Tent

A. fog (x)
f(3x²-1)
2(3x²-1) +3
6x²-2+3
6x+1
B. gof (x)
g(2x+3)
3(2x+3)²-1
3(4x²+12x+9)-1
12x2+36x+8
C. fog (2)
f(3(2)²-1)
2(3(2)²-1) +3
2(3(4)-1)+3
26
D. gof (-3)
g(2(-3)+3)
3(2(-3)+3)²-1
3(9)-1
26
2. fog(x) = f(g(x)
-2x+3 = 4(g(x))-1
-2x+3+1 = 4(g(x))
-2x +4 = 4(g(x))
g(x) = -1/2x + 1