• 2022-06-26
    当[img=39x16]17e4486061a9cd1.jpg[/img]时,[img=49x20]17e43c28e004aa4.jpg[/img]是[img=44x19]17e43c28e9be452.jpg[/img]的. (填“高阶无穷小”、“低阶无穷小”、“同阶无穷小”或“等价无穷小”)