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Bab Differensial
Matematika SMA Kelas X

y = f(x) / g(x)
dy/dx = ( f'(x) . g(x) - f(x) . g'(x) ) / (g(x))²

y = (x - 1) / (x + 1)
dy/dx = (1 . (x + 1) - (x - 1) . 1) / (x + 1)²
         = (x + 1 - x + 1) / (x + 1)²
         = 2 / (x² + 2x + 1)