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主要内容

不确定形式后的后续步骤(找出极限)

问题

麦克斯尝试寻找limit, start subscript, x, \to, start fraction, pi, divided by, 2, end fraction, end subscript, start fraction, sine, left parenthesis, 2, x, right parenthesis, divided by, cosine, left parenthesis, x, right parenthesis, end fraction.
使用直代入法,他得出start fraction, 0, divided by, 0, end fraction.
下一步麦克斯该怎么做?
选出正确答案:
不会做了?
不会做了?