- Calcule os limites:
a) lim x->3 (4x^2 + 12x) / (6 - x - x^2)
b) lim x->-2 (sqrt(x^4 - 4x + 1))
c) lim x->2 (sqrt(4x + 1) - 3) / (x - 2)
d) lim x->-3 (x^3 - 2x^2 + 3x - 4) / (3x^2 - x^4)
e) lim x->∞ (2 - 3x^2) / (6x^2 + 4x)
f) lim x->∞ cos^2(x) / (3 - 2x)
- Calcule lim x->1 f(x), sabendo que a função f(x) satisfaz |f(x) - x^2| ≤ 2(x - 1)(x + 1).