lim(x→∞,y→∞) x+y/x^2-xy+y^2
人气：475 ℃ 时间：2020-07-11 08:30:45
解答
lim(x→∞,y→∞) x+y/x^2-xy+y^2 =lim(x→∞,y→∞)(1/y+1/x)/(x/y-1+y/x)=0
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