Question

lim5x^2-2x+3当x趋于无穷大时的极限

Answer 1

因为
lim(x->∞)1/(5x^2-2x+3)
=lim(x->∞)(1/x^2)/(5-2/x+3/x^2)
=0/(5-0+0)
=0
而无穷小的倒数是∞
所以
原式=∞.