ÌâÄ¿ÄÚÈÝ
ÎÒÃÇѧ¹ý¶þ´Îº¯ÊýµÄͼÏóµÄƽÒÆ£¬È磺½«¶þ´Îº¯Êýy=3x2µÄͼÏóÏò×óƽÒÆ2¸öµ¥Î»£¬ÔÙÏòÏÂƽÒÆ4¸öµ¥Î»£¬ËùͼÏóµÄº¯Êý±í´ïʽÊÇy=3£¨x+2£©2-4£®Àà±È¶þ´Îº¯ÊýµÄͼÏóµÄƽÒÆ£¬ÎÒÃǶԷ´±ÈÀýº¯ÊýµÄͼÏó×÷ÀàËƵı任£º
£¨1£©½«y=
µÄͼÏóÏòÓÒƽÒÆ1¸öµ¥Î»£¬ÔÙÏòÉÏƽÒÆ1¸öµ¥Î»£¬ËùµÃͼÏóµÄº¯Êý±í´ïʽΪ £»
£¨2£©º¯Êýy=
µÄͼÏó¿ÉÓÉy=
µÄͼÏóÏò ƽÒÆ ¸öµ¥Î»µÃµ½£»y=
µÄͼÏó¿ÉÓÉ·´±ÈÀýº¯Êý µÄͼÏó¾¹ý µÄ±ä»»µÃµ½£®
£¨1£©½«y=
1 |
x |
£¨2£©º¯Êýy=
x+1 |
x |
1 |
x |
x-1 |
x-2 |
¿¼µã£º¶þ´Îº¯ÊýͼÏóÓ뼸ºÎ±ä»»,·´±ÈÀýº¯ÊýµÄÐÔÖÊ
רÌ⣺
·ÖÎö£º£¨1£©¸ù¾Ý¡°ÉϼÓϼõ£¬×ó¼ÓÓÒ¼õ¡±µÄÔÔò½øÐнâ´ð¼´¿É£»
£¨2£©ÏȽ«
±äÐÎΪ1+
£¬½«y=
±äÐÎΪ1+
£¬ÔÙ¸ù¾Ý¡°ÉϼÓϼõ£¬×ó¼ÓÓÒ¼õ¡±µÄÔÔò½øÐнâ´ð¼´¿É£®
£¨2£©ÏȽ«
x+1 |
x |
1 |
x |
x-1 |
x-2 |
1 |
x-2 |
½â´ð£º½â£º£¨1£©ÓÉÌâÒ⣬¿ÉÖªº¯Êýy=
µÄͼÏóÏòÓÒƽÒÆ1¸öµ¥Î»£¬ÔÙÏòÉÏƽÒÆ1¸öµ¥Î»ºóµÄ±í´ïʽΪy=
+1µÄͼÏó£»
£¨2£©¡ßy=
=1+
£¬
¡àº¯Êýy=
µÄͼÏó¿ÉÓÉy=
µÄͼÏóÏòÉÏƽÒÆ1¸öµ¥Î»µÃµ½£»
¡ßy=
=1+
£¬
¡ày=
µÄͼÏó¿ÉÓÉ·´±ÈÀýº¯Êýy=
µÄͼÏóÏòÓÒƽÒÆ2¸öµ¥Î»£¬ÔÙÏòÉÏƽÒÆ1¸öµ¥Î»µÃµ½£®
¹Ê´ð°¸Îª£ºy=
+1£»ÉÏ£¬1£»y=
£¬ÏòÓÒƽÒÆ2¸öµ¥Î»£¬ÔÙÏòÉÏƽÒÆ1¸öµ¥Î»£®
1 |
x |
1 |
x-1 |
£¨2£©¡ßy=
x+1 |
x |
1 |
x |
¡àº¯Êýy=
x+1 |
x |
1 |
x |
¡ßy=
x-1 |
x-2 |
1 |
x-2 |
¡ày=
x-1 |
x-2 |
1 |
x |
¹Ê´ð°¸Îª£ºy=
1 |
x-1 |
1 |
x |
µãÆÀ£º±¾Ì⿼²éµÄÊǶþ´Îº¯Êý¡¢·´±ÈÀýº¯ÊýµÄͼÏóÓ뼸ºÎ±ä»»£¬ÊìÖª¡°ÉϼÓϼõ£¬×ó¼ÓÓÒ¼õ¡±µÄÔÔòÊǽâ´ð´ËÌâµÄ¹Ø¼ü£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
ijÖÖ¾¨µÄÌåÖØ¿É´ï136 000 000¿Ë£¬ÓÿÆѧ¼ÇÊý·¨±íʾÊý¾Ý136 000 000ÊÇ£¨¡¡¡¡£©
A¡¢13.6¡Á107 |
B¡¢136¡Á106 |
C¡¢1.36¡Á107 |
D¡¢1.36¡Á108 |
Èçͼ£¬µãAÊÇ·´±ÈÀýº¯Êýy=-
ÔÚµÚ¶þÏóÏÞÄÚͼÏóÉÏÒ»µã£¬µãBÊÇ·´±ÈÀýº¯Êýy=
ÔÚµÚÒ»ÏóÏÞÄÚͼÏóÉÏÒ»µã£¬Ö±ÏßABÓëyÖá½»ÓÚµãC£¬ÇÒAC=BC£¬Á¬½ÓOA¡¢OB£¬Ôò¡÷AOBµÄÃæ»ýÊÇ£¨¡¡¡¡£©
2 |
x |
4 |
x |
A¡¢2 | B¡¢2.5 | C¡¢3 | D¡¢3.5 |
Èçͼ£¬BCÓë¡ÑOÏàÇÐÓÚµãC£¬BOµÄÑÓ³¤Ïß½»¡ÑOÓÚµãA£¬Á¬½áAC£¬Èô¡ÏACB=120¡ã£¬Ôò¡ÏAµÄ¶ÈÊýµÈÓÚ£¨¡¡¡¡£©
A¡¢30¡ã | B¡¢40¡ã |
C¡¢50¡ã | D¡¢60¡ã |
2012ÄêÎÒ¹úÈ«ÄêÍê³ÉÔìÁÖÃæ»ý6 010 000¹«Ç꣮½«6 010 000ÓÿÆѧ¼ÇÊý·¨±íʾΪ£¨¡¡¡¡£©
A¡¢6.01¡Á107 |
B¡¢6.01¡Á106 |
C¡¢0.601¡Á107 |
D¡¢60.1¡Á105 |