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主要内容

有理函数的末端行为

问题

考虑以下有理函数 f
f, left parenthesis, x, right parenthesis, equals, start fraction, 6, x, cubed, minus, x, squared, plus, 7, divided by, 2, x, plus, 5, end fraction
判定 f's 末端行为
f, left parenthesis, x, right parenthesis, \to
as x, \to, minus, infinity
f, left parenthesis, x, right parenthesis, \to
as x, \to, infinity
不会做了?
不会做了?