x趋近于无穷 求(2x^2+1)^2/(x^2+3) 求极限

问题描述:

x趋近于无穷 求(2x^2+1)^2/(x^2+3) 求极限

lim(2x^2+1)^2/(x^2+3) (分子分母除以x^2)
=lim(2x+1/x)^2/(1+3/x^2)=+∞