fungsi kelas 8 SMP. nomer 1 dan 2 CEPETAN poin 45 lho

1. F(x) = 2x - 6
f(x + 1) = 2(x+1) - 6 = 2x-4
f(2x-1) = 2(2x-1) - 6 = 4x-8
f(x^2) = 2(x^2)-6 = 2x^2-6

b. jika f(x)= 2x-6
kalau f(x-a) = 2(x-a) - 6 = 2x - 6 - 2a
kalau f(x+a) - f(x) = (2(x+a)-6) - (2x-6) = 2x + 2a -6 - 2x + 6 = 2a - 6