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主要内容

商(包括三角函数)无穷处的极限

问题

limit, start subscript, x, \to, infinity, end subscript, start fraction, 2, x, plus, sine, left parenthesis, x, right parenthesis, divided by, x, plus, 7, end fraction
选出正确答案:
不会做了?
不会做了?