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Limit (x-> a) f(x) /g(x) ada jika f(a) / g(a) bentuk 0/0lim(x-> 2) (3x² + ax + a + 3) / (x² - x - 2) ada jika
misal
f(x) = 3x² + ax + a + 3
g(x) = x² - x - 2
.
f(2) = 0
3(2)² + a(2) + a + 3 = 0
12 + 2a + a + 3 = 0
3a + 15 = 0
a = -5
f(x)= 3x² - 5x - 2
limit (x->2) 3x² - 5x - 2 / (x² -x -2)
lim(x->2) (x-2)(3x +1) /(x-2)(x + 1)
lim(x->2) (3x +1)/(x+1)
x = 2 --> limit = (3.2 +1) / (2+1) = 7/3