di ketahui f(x) = 3x-6 dan g(x) = 2x +a.jika (f•g) (x)= (g•f)(x),maka a=
Matematika
agung1404
Pertanyaan
di ketahui f(x) = 3x-6 dan g(x) = 2x +a.jika (f•g) (x)= (g•f)(x),maka a=
1 Jawaban
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1. Jawaban incess49
(fog) (x) = (gof) (x)
3(2x + a) - 6 = 2(3x - 6) + a
6x + 3a - 6 = 6x - 12 + a
6x - 6x + 3a - a = -12 + 6
2a = -6
a = -3