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飞熊jsrt查看:0 回复:1 评论:0 创建时间:2023-11-23T20:46:35
积 sqrt(dx^2+dy^2)
sqrt(dx^2(y'^2+1))
积 sqrt(y'^2+1)dx
dy=f’(x)*dximgsrc="https://static.codemao.cn/emoji/codemao/%E7%BC%96%E7%A8%8B%E7%8C%AB_%E7%B4%A7%E5%BC%A0.gif"alt="emotion_编程猫_紧张"imgsrc="https://static.codemao.cn/emoji/codemao/%E7%BC%96%E7%A8%8B%E7%8C%AB_%E7%B4%A7%E5%BC%A0.gif"alt="emotion_编程猫_紧张"
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