Asked by Beta plus
Evaluate the limits lim x^3 + 3/ x->¤ 2x^3 + 4x + 1 lim 1 - cosx / x->o x^2
Answers
Answered by
MathMate
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 (1-cos(x))/(x²)
= Lim (x->∞)
1.
Lim (x->∞) (x³+3)/(2x³+4x+1)
= Lim (x->∞) (3x²)/(6x²)
= Lim (x->∞) (6x)/(12x)
= Lim (x->∞) 1/2
= 1/2
Similarly for (1-cos(x))/(x²)
= Lim (x->∞)
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