Óüôµ¶½«ÐÎ×´Èçͼ£¨¼×£©ËùʾµÄ¾ØÐÎֽƬABCDÑØ×ÅÖ±ÏßCM¼ô³ÉÁ½²¿·Ö£¬ÆäÖÐMΪADµÄÖе㣮ÓÃÕâÁ½²¿·ÖֽƬ¿ÉÒÔÆ´³ÉһЩÐÂͼÐΣ¬ÀýÈçͼ£¨ÒÒ£©ÖеÄRt¡÷BCE¾ÍÊÇÆ´³ÉµÄÒ»¸öͼÐΣ®
£¨1£©ÓÃÕâÁ½²¿·ÖֽƬ³ýÁË¿ÉÒÔÆ´³ÉͼÒÒÖеÄRt¡÷BCEÍ⣬»¹¿ÉÒÔÆ´³ÉһЩËıßÐΣ®ÇëÄãÊÔÒ»ÊÔ£¬°ÑÆ´ºÃµÄËıßÐηֱð»­ÔÚͼ±û¡¢Í¼¶¡µÄÐé¿òÄÚ£»
£¨2£©ÈôÀûÓÃÕâÁ½²¿·ÖֽƬƴ³ÉµÄRt¡÷BCEÊǵÈÑüÖ±½ÇÈý½ÇÐΣ¬ÉèÔ­¾ØÐÎֽƬÖеıßABºÍBCµÄ³¤·Ö±ðΪaÀåÃס¢bÀåÃ×£¬ÇÒa¡¢bÇ¡ºÃÊǹØÓÚxµÄ·½³Ìx2-£¨m-1£©x+m+1=0µÄÁ½¸öʵÊý¸ù£¬ÊÔÇó³öÔ­¾ØÐÎֽƬµÄÃæ»ý£®

¡¾´ð°¸¡¿·ÖÎö£º£¨1£©ÏàµÈµÄ±ßΪCDÓëAB£»AM=MDÈÃÏàµÈµÄ±ßÖغϼ´¿É£»
£¨2£©¸ù¾ÝµÈÑüÖ±½ÇÈý½ÇÐοɵõ½aºÍbµÄ¹Øϵ£®¸ù¾Ý¸ùÓëϵÊýµÄ¹ØϵµÃµ½ÆäÖÐÒ»¸ö×ÖĸºÍmµÄ¹Øϵ£¬½ø¶øÇó½â£®
½â´ð£º½â£º£¨1£©Èçͼ£»£¨4·Ö£©£¨Ã¿Ò»¸öͼ2·Ö£©

£¨2£©ÓÉÌâ¿ÉÖªAB=CD=AE£¬ÓÖBC=BE=AB+AE£¬
¡àBC=2AB£¬¼´b=2a£¬£¨5·Ö£©
ÓÉÌâÒâÖªa£¬2aÊÇ·½³Ìx2-£¨m-1£©x+m+1=0µÄÁ½¸ù£¬
¡à£¨6·Ö£©
ÏûÈ¥a£¬µÃ2m2-13m-7=0£¬½âµÃm=7»ò£¬£¨7·Ö£©
¾­¼ìÑ飺ÓÉÓÚµ±£¬£¬Öª²»·ûºÏÌâÒ⣬ÉáÈ¥£®m=7·ûºÏÌâÒ⣮£¨8·Ö£©
¡àS¾ØÐÎ=ab=m+1=8£¬
´ð£ºÔ­¾ØÐÎֽƬµÄÃæ»ýΪ8cm2£®£¨9·Ö£©
µãÆÀ£º½â¾ö±¾ÌâÐèÕÒµ½ÏàµÈµÄ±ß£¬ÈÃÆäÖغϣ¬Æ´ºÏ£¬»òÕߵõ½ÏàÓ¦µÄ¹Øϵ£¬ÀûÓøùÓëϵÊý¹ØϵÇó½â£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

Óüôµ¶½«ÐÎ×´Èçͼ£¨¼×£©ËùʾµÄ¾ØÐÎֽƬABCDÑØ×ÅÖ±ÏßCM¼ô³ÉÁ½²¿·Ö£¬ÆäÖÐMΪADµÄÖе㣮ÓÃÕâÁ½²¿·ÖֽƬ¿ÉÒÔÆ´³ÉһЩÐÂͼÐΣ¬ÀýÈçͼ£¨ÒÒ£©ÖеÄRt¡÷BCE¾ÍÊÇÆ´³ÉµÄÒ»¸öͼÐΣ®
£¨1£©ÓÃÕâÁ½²¿·ÖֽƬ³ýÁË¿ÉÒÔÆ´³ÉͼÒÒÖеÄRt¡÷BCEÍ⣬»¹¿ÉÒÔÆ´³ÉһЩËıßÐΣ®ÇëÄãÊÔÒ»ÊÔ£¬°ÑÆ´ºÃµÄËıßÐηֱð»­ÔÚͼ±û¡¢Í¼¶¡µÄÐé¿òÄÚ£»
£¨2£©ÈôÀûÓÃÕâÁ½²¿·ÖֽƬƴ³ÉµÄRt¡÷BCEÊǵÈÑüÖ±½ÇÈý½ÇÐΣ¬ÉèÔ­¾ØÐÎֽƬÖеıßABºÍBCµÄ³¤·Ö±ðΪaÀåÃס¢bÀåÃ×£¬ÇÒa¡¢bÇ¡ºÃÊǹØÓÚxµÄ·½³Ìx2-£¨m-1£©x+m+1=0µÄÁ½¸öʵÊý¸ù£¬ÊÔÇó³öÔ­¾ØÐÎֽƬµÄÃæ»ý£®
¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º2010-2011ѧÄêºÓ±±Ê¡ÇػʵºÊк£¸ÛÇø¾ÅÄ꼶£¨ÉÏ£©ÆÚÄ©ÊýѧÊÔ¾í£¨Èý£©£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

Óüôµ¶½«ÐÎ×´Èçͼ£¨¼×£©ËùʾµÄ¾ØÐÎֽƬABCDÑØ×ÅÖ±ÏßCM¼ô³ÉÁ½²¿·Ö£¬ÆäÖÐMΪADµÄÖе㣮ÓÃÕâÁ½²¿·ÖֽƬ¿ÉÒÔÆ´³ÉһЩÐÂͼÐΣ¬ÀýÈçͼ£¨ÒÒ£©ÖеÄRt¡÷BCE¾ÍÊÇÆ´³ÉµÄÒ»¸öͼÐΣ®
£¨1£©ÓÃÕâÁ½²¿·ÖֽƬ³ýÁË¿ÉÒÔÆ´³ÉͼÒÒÖеÄRt¡÷BCEÍ⣬»¹¿ÉÒÔÆ´³ÉһЩËıßÐΣ®ÇëÄãÊÔÒ»ÊÔ£¬°ÑÆ´ºÃµÄËıßÐηֱð»­ÔÚͼ±û¡¢Í¼¶¡µÄÐé¿òÄÚ£»
£¨2£©ÈôÀûÓÃÕâÁ½²¿·ÖֽƬƴ³ÉµÄRt¡÷BCEÊǵÈÑüÖ±½ÇÈý½ÇÐΣ¬ÉèÔ­¾ØÐÎֽƬÖеıßABºÍBCµÄ³¤·Ö±ðΪaÀåÃס¢bÀåÃ×£¬ÇÒa¡¢bÇ¡ºÃÊǹØÓÚxµÄ·½³Ìx2-£¨m-1£©x+m+1=0µÄÁ½¸öʵÊý¸ù£¬ÊÔÇó³öÔ­¾ØÐÎֽƬµÄÃæ»ý£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£ºµÚ1Õ¡¶Ò»Ôª¶þ´Î·½³Ì¡·³£¿¼Ì⼯£¨15£©£º1.2 ½âÒ»Ôª¶þ´Î·½³ÌµÄËã·¨£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

Óüôµ¶½«ÐÎ×´Èçͼ£¨¼×£©ËùʾµÄ¾ØÐÎֽƬABCDÑØ×ÅÖ±ÏßCM¼ô³ÉÁ½²¿·Ö£¬ÆäÖÐMΪADµÄÖе㣮ÓÃÕâÁ½²¿·ÖֽƬ¿ÉÒÔÆ´³ÉһЩÐÂͼÐΣ¬ÀýÈçͼ£¨ÒÒ£©ÖеÄRt¡÷BCE¾ÍÊÇÆ´³ÉµÄÒ»¸öͼÐΣ®
£¨1£©ÓÃÕâÁ½²¿·ÖֽƬ³ýÁË¿ÉÒÔÆ´³ÉͼÒÒÖеÄRt¡÷BCEÍ⣬»¹¿ÉÒÔÆ´³ÉһЩËıßÐΣ®ÇëÄãÊÔÒ»ÊÔ£¬°ÑÆ´ºÃµÄËıßÐηֱð»­ÔÚͼ±û¡¢Í¼¶¡µÄÐé¿òÄÚ£»
£¨2£©ÈôÀûÓÃÕâÁ½²¿·ÖֽƬƴ³ÉµÄRt¡÷BCEÊǵÈÑüÖ±½ÇÈý½ÇÐΣ¬ÉèÔ­¾ØÐÎֽƬÖеıßABºÍBCµÄ³¤·Ö±ðΪaÀåÃס¢bÀåÃ×£¬ÇÒa¡¢bÇ¡ºÃÊǹØÓÚxµÄ·½³Ìx2-£¨m-1£©x+m+1=0µÄÁ½¸öʵÊý¸ù£¬ÊÔÇó³öÔ­¾ØÐÎֽƬµÄÃæ»ý£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º2004ÄêÈ«¹úÖп¼ÊýѧÊÔÌâ»ã±à¡¶Ò»Ôª¶þ´Î·½³Ì¡·£¨07£©£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

£¨2004•Ì©ÖÝ£©Óüôµ¶½«ÐÎ×´Èçͼ£¨¼×£©ËùʾµÄ¾ØÐÎֽƬABCDÑØ×ÅÖ±ÏßCM¼ô³ÉÁ½²¿·Ö£¬ÆäÖÐMΪADµÄÖе㣮ÓÃÕâÁ½²¿·ÖֽƬ¿ÉÒÔÆ´³ÉһЩÐÂͼÐΣ¬ÀýÈçͼ£¨ÒÒ£©ÖеÄRt¡÷BCE¾ÍÊÇÆ´³ÉµÄÒ»¸öͼÐΣ®
£¨1£©ÓÃÕâÁ½²¿·ÖֽƬ³ýÁË¿ÉÒÔÆ´³ÉͼÒÒÖеÄRt¡÷BCEÍ⣬»¹¿ÉÒÔÆ´³ÉһЩËıßÐΣ®ÇëÄãÊÔÒ»ÊÔ£¬°ÑÆ´ºÃµÄËıßÐηֱð»­ÔÚͼ±û¡¢Í¼¶¡µÄÐé¿òÄÚ£»
£¨2£©ÈôÀûÓÃÕâÁ½²¿·ÖֽƬƴ³ÉµÄRt¡÷BCEÊǵÈÑüÖ±½ÇÈý½ÇÐΣ¬ÉèÔ­¾ØÐÎֽƬÖеıßABºÍBCµÄ³¤·Ö±ðΪaÀåÃס¢bÀåÃ×£¬ÇÒa¡¢bÇ¡ºÃÊǹØÓÚxµÄ·½³Ìx2-£¨m-1£©x+m+1=0µÄÁ½¸öʵÊý¸ù£¬ÊÔÇó³öÔ­¾ØÐÎֽƬµÄÃæ»ý£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸