ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿¹ûÓ¬µÄ»ÒÉí£¨A)ÓëºÚÉí£¨a)¡¢Ö±Ã«£¨B)Óë·Ö²æ루b)ÊÇÁ½¶ÔÏà¶ÔÐÔ×´¡£Á½Ö»´ÆÐÛ¹ûÓ¬ÔÓ½»£¬F1±íÏÖÐͼ°ÊýÁ¿ÈçÏÂ±í£º
»ÒÉí | ºÚÉí | ֱë | ·Ö²æë | |
´ÆÓ¬£¨Ö»£© | 75 | 26 | 101 | 0 |
ÐÛÓ¬£¨Ö»£© | 74 | 25 | 50 | 49 |
Çë»Ø´ð£º
(1)B(b)»ùÒò±íÏÖµÄÒÅ´«·½Ê½Îª__________ÒÅ´«£¬¹ûÓ¬µÄ´ÆÐÛÊÇÔÚ__________£¨Ê±ÆÚ)È·¶¨µÄ¡£
(2)F1»ÒÉíֱë´Æ¹ûÓ¬µÄ»ùÒòÐÍÓÐ__________ÖÖ£¬´¿ºÏ×ÓºÍÔÓºÏ×ӵıÈÀýΪ_____________¡£
(3)ÈôF1ÖеĻÒÉíÐÛ¹ûÓ¬ÓëºÚÉí´Æ¹ûÓ¬ÔÓ½»£¬Ôòºó´úÖкÚÉí¹ûÓ¬ËùÕ¼±ÈÀýΪ_____________¡£
(4)Ϊ²â¶¨F1ÖÐijֻ»ÒÉíÐÛÓ¬µÄ»ùÒòÐÍ£¬¿É½«ÆäÓë»ùÒòÐÍΪ________µÄ´Æ¹ûÓ¬²â½»¡£Èôºó´ú±íÏÖÐͼ°±ÈÀýΪ________,Ôò»ÒÉíÐÛ¹ûÓ¬µÄ»ùÒòÐÍΪAaXBY£¨ÇëÓÃÒÅ´«Í¼½âµÄ·½Ê½½øÐÐ˵Ã÷£©______¡£
¡¾´ð°¸¡¿°éXȾɫÌå Êܾ« 4 1£º5 1/3 aaXbXb »ÒÉíֱë´ÆÓ¬:ºÚÉíֱë´ÆÓ¬£º»ÒÉí·Ö²æëÐÛÓ¬£ººÚÉí·Ö²æëÐÛÓ¬=1£º1:1::1
¡¾½âÎö¡¿
·ÖÎö±í¸ñ£ºÖ»·ÖÎö»ÒÉíºÍºÚÉíÕâÒ»¶ÔÏà¶ÔÐÔ×´£¬×Ó´ú´ÆÐÛ¹ûÓ¬ÖлÒÉí£ººÚÉí¾ùԼΪ3£º1£¬ËµÃ÷¿ØÖÆ»ÒÉíÓëºÚÉíµÄ»ùÒòλÓÚ³£È¾É«ÌåÉÏ£¬ÇÒÇ×±¾µÄ»ùÒòÐ;ùΪAa£»Ö»·ÖÎöֱëºÍ·Ö²æëÕâÒ»¶ÔÏà¶ÔÐÔ×´£¬×Ó´úÖдƹûӬȫΪֱ룬¶øÐÛ¹ûÓ¬ÖÐֱ룺·Ö²æëԼΪ1£º1£¬ËµÃ÷¿ØÖÆֱëÓë·Ö²æëµÄ»ùÒòλÓÚXȾɫÌåÉÏ£¬ÇÒÇ×±¾µÄ»ùÒòÐÍΪXBXbºÍXBY£®Òò´ËÇ×±¾µÄ»ùÒòÐÍΪAaXBXbºÍAaXBY£®
£¨1£©¸ù¾ÝÌâÒ⣬B£¨b£©»ùÒòλÓÚXȾɫÌåÉϱíÏÖΪ°éÐÔÒÅ´«£»¾«×ÓºÍÂÑϸ°û½áºÏ¶øÐγɵĺÏ×ÓÄÚÐÔȾɫÌå¾Í¾ö¶¨Á˹ûÓ¬µÄ´ÆÐÛ£®
£¨2£©¸ù¾ÝÌâÒ⣬Ç×±¾»ùÒòÐÍAaXBY¡ÁAaXBXb¡úF1ÖлÒÉíֱë´Æ¹ûÓ¬1/16AAXBXB¡¢2/16AaXBXB¡¢1/16AAXBXb¡¢2/16AaXBXb£¬´¿ºÏ×ÓºÍÔÓºÏ×ӵıÈÀýΪ1£º5£®
£¨3£©F1ÖеĻÒÉíÐÛ¹ûÓ¬£¨1/3AA¡¢2/3Aa£©ÓëºÚÉí´Æ¹ûÓ¬£¨aa£©ÔÓ½»£¬ºó´úAAÕ¼2/3£¬aaÕ¼1/3£®
£¨4£©F1»ÒÉíÐÛ¹ûÓ¬ÓëaaXbXbµÄ´Æ¹ûÓ¬²â½»£¬¼´¿É²â¶¨Æä»ùÒòÐÍ£®Èôºó´ú±íÏÖÐͼ°±ÈÀýΪ»ÒÉíֱë´ÆÓ¬£ººÚÉíֱë´ÆÓ¬£º»ÒÉí·Ö²æëÐÛÓ¬£ººÚÉí·Ö²æëÐÛÓ¬=1£º1£º1£º1£¬Ôò»ÒÉíÐÛ¹ûÓ¬µÄ»ùÒòÐÍΪAaXBY£®
ÒÅ´«Í¼½âÈçÏ£º