å¦å¾ï¼è¿æ¯ååå纽线ç交éï¼å®é
ä¸æ¯ä¸¤çå¶ç£ç»æï¼å¦ä¸å¾æ示
å¦å¾ï¼å¦æçé®æä¸æç½è¯·è¿½é®å¦ï¼
å¦ä¸å¾è§£é [0,Ï/6]â«sin²Î¸dθ ï¼è¿æ¯å¾ä¸åå½¢å²åºæ¥çâå¼å½¢âï¼ä»æç¹åºåç0°å°30°ç积å
å ædθå½å5°ï¼åä»æç¹å°åºé´é为5°çå°çº¿ï¼å°å弧åå²ä¸ºå¤æ®µï¼å°å¤æ®µå²çº¿å30°ç线段ç¨é»è²è线ç¸è¿ï¼åé»è²è线å´æçå¾å½¢è¿ä¼¼äº[0,Ï/6]â«sin²Î¸dθã注æé»è²è线å´æçæ¯ä¸ä¸ª7è¾¹åã
å®æ´å¤§å¾å¦ä¸ï¼çº¢è²çæ¯å纽线
è微积åçææ³å°±æ¯âå²ä¹å¼¥ç»ï¼æ失弥å°ï¼å²ä¹åå²ï¼ä»¥è³äºä¸å¯å²ï¼åä¸åå¨åä½èæ æ失ç£âï¼è¿æ®µè¯å¼ç¨èªæå½å¤ä»£æ°å¦å®¶åå¾½ã
å½dθæ éå°å°ä¸å»ï¼åå²ç段æ°æ 穷大æ¶ï¼å²åºæ¥çæ ç©·å¤è¾¹åå°±å该âå¼å½¢âé¢ç§¯æ å¼äºã
èå®é ä¸æ们ä¸å¯è½æ¯åä¸æ¬¡ç§¯åé¢é½ççå»å²16段ã128段ãä¹è³65536段ãèæ¯æ¾åºè§å¾ï¼å°ç§¯åä¸é¾ä»¥è®¡ç®çé¨å转å为已ç»ææ°å¦å è´¤ç®å¥½ç计ç®æ¨¡å¼ï¼
èåå¨çÏï¼å°±æ¯ä¸ç§æççï¼å·²ç»æå è´¤æ¿æ们ç®å°å¾é«ç²¾ç¡®åº¦ç»æçæ°å¦æ¦å¿µã
å¦æ¤è¯å¿åçï¼ä¸ç¥æ¥¼ä¸»æç½äºåï¼æç½è¯·ç¹å»âé纳âï¼è°¢è°¢ã