x趋向无穷时,求(2x^3+3x+1)/(4x^5+2x+7)的极限
问题描述:
x趋向无穷时,求(2x^3+3x+1)/(4x^5+2x+7)的极限
答
lim(x->∞)(2x^3+3x+1)/(4x^5+2x+7)
=lim(x->∞)(2/x^2+3/x^4+1/x^5)/(4+2/x^4+7/x^5)
=0