ËÑË÷
ÌâÄ¿ÄÚÈÝ
xȡʲôֵʱ£¬´úÊýʽ5(x£1)£2(x£2)µÄÖµ´óÓÚx£«2µÄÏà·´Êý£®
ÊÔÌâ´ð°¸
Ïà¹ØÁ·Ï°²á´ð°¸
´ð°¸£º
½âÎö£º
Á·Ï°²áϵÁдð°¸
ÊÀ³¬½ðµäº®¼ÙÀÖ԰ϵÁдð°¸
Ò»ÏßÃûʦº®¼Ù×÷Òµ±¾ÏµÁдð°¸
¿ìÀÖº®¼ÙÿÈÕ30·ÖÖÓϵÁдð°¸
ÃûУÃûʦº®¼ÙÅàÓÅ×÷Òµ±¾ÏµÁдð°¸
º®¼Ù×÷ÒµºÏ·Ê¹¤Òµ´óѧ³ö°æÉçϵÁдð°¸
½ð¶«·½ÎÄ»¯´´ÐÂÖп¼ÏµÁдð°¸
Öп¼±Ø±¸ºÓÄÏÖп¼¿¼µã¼¯Ñµ¾íϵÁдð°¸
¿¼Ç°Ìá·ÖÌìÌìÁ·ÏµÁдð°¸
¿ìÀÖ¹ýº®¼Ù½ËÕÈËÃñ³ö°æÉçϵÁдð°¸
º®¼Ù×÷Òµ·Ç³£5¼Ó2°×ɽ³ö°æÉçϵÁдð°¸
Ïà¹ØÌâÄ¿
µ±aȡʲôֵʱ£¬´úÊýʽ-2£¨a-1£©µÄÖµ£º
£¨1£©ÊÇÕýÊý£¿£¨2£©²»£¾1£¿£¨3£©²»£¼3a-5µÄÖµ£¿
xȡʲôֵʱ£¬´úÊýʽ
2x-1
3
µÄÖµ²»Ð¡ÓÚ
x+1
2
µÄÖµ£¬²¢Ð´³ö´ËʱxµÄ×îСֵ£®
µ±xȡʲôֵʱ£¬´úÊýʽ
1
2
x£¨x-1£©Óë
1
3
£¨x-2£©+1µÄÖµÏàµÈ£¿
µ±aȡʲôֵʱ£¬´úÊýʽ
2a+1
+1
ȡֵ×îС£¿²¢Çó³öÕâ¸ö×îСֵ£®
xȡʲôֵʱ£¬´úÊýʽ
2x+3
2
µÄÖµ²»Ð¡ÓÚ
1-
x-1
3
µÄÖµ£®
¹Ø ±Õ
ÊÔÌâ·ÖÀà
¸ßÖÐ
Êýѧ
Ó¢Óï
ÎïÀí
»¯Ñ§
ÉúÎï
µØÀí
³õÖÐ
Êýѧ
Ó¢Óï
ÎïÀí
»¯Ñ§
ÉúÎï
µØÀí
Сѧ
Êýѧ
Ó¢Óï
ÆäËû
ÔĶÁÀí½â´ð°¸
ÒѻشðϰÌâ
δ»Ø´ðϰÌâ
ÌâÄ¿»ã×Ü
ÊÔ¾í»ã×Ü
Á·Ï°²á½âÎö´ð°¸