æ 穷大çé¶æ°çå®ä¹ä¸
æ ç©·å°ç±»ä¼¼ï¼åæ ·å¯å®ä¹Bæ¯Aé«é¶æä½é¶çæ 穷大ãæææä¸çå®ä¹å¦ä¸ï¼ææ¡ä»¶ä¸ç1æ¹ä¸ºé0常æ°ï¼åf(x)æ¯g(x)å¨åä¸ååè¿ç¨ä¸çåé¶æ ç©·å¤§ï¼ ææ¡ä»¶ä¸ç1æ¹ä¸º0ï¼åå¨åä¸ååè¿ç¨ä¸f(x)æ¯æ¯g(x)ä½é¶çæ 穷大ï¼ææ¡ä»¶ä¸ç1æ¹ä¸ºâï¼åå¨åä¸ååè¿ç¨ä¸f(x)æ¯æ¯g(x)é«é¶çæ 穷大ãæ ç©·å°çé¶æ°ä¸æ 穷大çé¶æ°é½æ¯ç¨æ¥å»ç»å¨åä¸ååè¿ç¨ä¸ä¸¤ä¸ªåéç¸æ¯è¾èè¨çååé度çã