Math
posted by Beta plus .
Evaluate the limits lim x^3 + 3/ x>¤ 2x^3 + 4x + 1 lim 1  cosx / x>o x^2

Use l'Hôpitals rule:
1.
Lim (x>∞) (x³+3)/(2x³+4x+1)
= Lim (x>∞) (3x²)/(6x²)
= Lim (x>∞) (6x)/(12x)
= Lim (x>∞) 1/2
= 1/2
Similarly for (1cos(x))/(x²)
= Lim (x>∞)