Jawabanmu

2014-05-25T15:57:31+07:00
F(g(x-4)) = 3(x-4) - 1
               = 3x - 13
f(3x-13) = 2(3x-13) + 3
             = 6x - 26 + 3
             = 6x - 23

(fog)(x-4) = f(x) + 2 g(x)
6x - 23 = 2x + 3 + 2(3x - 1)
6x - 23 = 8x + 1
8x - 6x = - 23 - 1
2x = - 24
  x = -12

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