判断8/n+5n+6的收敛性8/n²+5n+6

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判断8/n+5n+6的收敛性8/n²+5n+6
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判断8/n+5n+6的收敛性8/n²+5n+6
判断8/n+5n+6的收敛性
8/n²+5n+6

判断8/n+5n+6的收敛性8/n²+5n+6
若是y=(8/n^2)+5n+6,则n->∞时,y->∞,不收敛
若是y=8/(n^2+5n+6),则n->∞时,y->0,即收敛于0