是啊, 應該是拋物線, 竟然給畫成 f(x) = arctan (x)...
所有跟帖:
• 哈!小季季的數學真不錯! -π- ♂ (0 bytes) () 08/18/2011 postreply 16:30:47
• 哈!沒有對不起高中的數學老師...就不錯了... -季襄- ♂ (0 bytes) () 08/18/2011 postreply 17:38:19
• 哈!小季季的數學真不錯! -π- ♂ (0 bytes) () 08/18/2011 postreply 16:30:47
• 哈!沒有對不起高中的數學老師...就不錯了... -季襄- ♂ (0 bytes) () 08/18/2011 postreply 17:38:19
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