Jawab:
b
Penjelasan dengan langkah-langkah:
(i)
(f-g)(x) = f(x) - g(x) = 2x/(x+2) -3/x = (2x²-3x-6)/x(x+2)
(ii)
(f.g)(x) = f(x).g(x) = 2x/(x+2) . 3/x = 6x/x(x+2) = 6x/(x²+2x)
(iii)
(f/g)(x) = f(x)/g(x) = 2x/(x+2) / 3/x = 2x²/3(x+2) = 2x²/(3x+6)
(iv)
(g/f)(x) = g(x)/f(x) = 3/x / 2x/(x+2) = 3(x+2)/x.2x = (3x + 6)/2x²
yang benar hanya (i) dan (iii)
jadi jawaban b
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Jawab:
b
Penjelasan dengan langkah-langkah:
(i)
(f-g)(x) = f(x) - g(x) = 2x/(x+2) -3/x = (2x²-3x-6)/x(x+2)
(ii)
(f.g)(x) = f(x).g(x) = 2x/(x+2) . 3/x = 6x/x(x+2) = 6x/(x²+2x)
(iii)
(f/g)(x) = f(x)/g(x) = 2x/(x+2) / 3/x = 2x²/3(x+2) = 2x²/(3x+6)
(iv)
(g/f)(x) = g(x)/f(x) = 3/x / 2x/(x+2) = 3(x+2)/x.2x = (3x + 6)/2x²
yang benar hanya (i) dan (iii)
jadi jawaban b