limx趋进于无穷,(x^2+2x-5)/(5x^2-x-2)的极限
问题描述:
limx趋进于无穷,(x^2+2x-5)/(5x^2-x-2)的极限
答
limx趋进于无穷 (1+2/x-5/x^2)/(5-1/x-2/x^2)
=1/5