±¾Ìâ¹²ÓУ¨1£©¡¢£¨2£©¡¢£¨3£©Èý¸öÑ¡´ðÌ⣬ÿÌâ7·Ö£¬Ç뿼ÉúÈÎÑ¡2Ìâ×÷´ð£¬Âú·Ö14·Ö£®Èç¹û¶à×ö£¬ÔòÒÔËù×öµÄÇ°2Ìâ¼Æ·Ö£®
£¨1£©Ñ¡ÐÞ4-2£º¾ØÕóÓë±ä»»
ÒÑÖª¶þ½×¾ØÕóMÓÐÌØÕ÷Öµ¦Ë=3¼°¶ÔÓ¦µÄÒ»¸öÌØÕ÷ÏòÁ¿£¬²¢ÇÒ¾ØÕóM¶ÔÓ¦µÄ±ä»»½«µã£¨-1£¬2£©±ä»»³É£¨9£¬15£©£®Çó¾ØÕóM£®
£¨2£©Ñ¡ÐÞ4-4£º×ø±êϵÓë²ÎÊý·½³Ì
ÔÚÖ±½Ç×ø±êϵxOyÖУ¬ÒÑÖªÇúÏßCµÄ²ÎÊý·½³ÌÊÇ£¨¦ÁÊDzÎÊý£©£®
ÏÖÒÔÔ­µãOΪ¼«µã£¬xÖáµÄÕý°ëÖáΪ¼«Öᣬ½¨Á¢¼«×ø±êϵ£¬Ð´³öÇúÏßCµÄ¼«×ø±ê·½³Ì£®
£¨3£©Ñ¡ÐÞ4-5£º²»µÈʽѡ½²
½â²»µÈʽ|2x+1|-|x-4|£¾2£®
¡¾´ð°¸¡¿·ÖÎö£º£¨1£©Éè³öM=£¬Ôò¸ù¾Ý¶þ½×¾ØÕóMÓÐÌØÕ÷Öµ¦Ë=3¼°¶ÔÓ¦µÄÒ»¸öÌØÕ÷ÏòÁ¿µÃµ½¹ØÓÚa£¬b£¬c£¬dµÄ·½³ÌÔÙ¸ù¾Ý¾ØÕóM¶ÔÓ¦µÄ±ä»»½«µã£¨-1£¬2£©±ä»»³É£¨9£¬15£©£¬Óֿɵõ½¹ØÓÚa£¬b£¬c£¬dµÄ·½³Ì
×é³ÉËÄÔªÒ»´Î·½³Ì×é¼´¿ÉÇó½â
£¨2£©ÏÈÏûÈ¥²ÎÊýµÃ³öÇúÏßCµÄÖ±½Ç×ø±ê·½³ÌÔÙ½áºÏ£ºx2+y2=¦Ñ2£¬y=¦Ñcos¦Èд³öÇúÏßCµÄ¼«×ø±ê·½³ÌΪ¼´¿É£»
£¨3£©Áîy=|2x+1|-|x-4|£¬Í¨¹ý·ÖÀàÌÖÂÛд³ö£º£¬×÷³öº¯Êýy=|2x+1|-|x-4|µÄͼÏó¹Û²ìͼÏóµÃµ½|2x+1|-|x-4|£¾2µÄ½â¼¯£®
½â´ð£º½â£º£¨1£©½â£ºÉèM=£¬Ôò=3=£¬¹Ê£¨3·Ö£©
=£¬¹Ê£¨5·Ö£©
ÁªÁ¢ÒÔÉÏÁ½·½³Ì×é½âµÃa=-1£¬b=4£¬c=-3£¬d=6£¬¹ÊM=£®£¨7·Ö£©
£¨2£©½â£ºÇúÏßCµÄÖ±½Ç×ø±ê·½³ÌÊÇ£¨x-2£©2+y2=4£¬£¨3·Ö£©
ÒòΪx2+y2=¦Ñ2£¬y=¦Ñcos¦È£¬£¨5·Ö£©
¹ÊÇúÏßCµÄ¼«×ø±ê·½³ÌΪ¦Ñ2-4¦Ñcos¦È=0£¬¼´¦Ñ=4cos¦È£®£¨7·Ö£©
£¨3£©½â£ºÁîy=|2x+1|-|x-4|£¬Ôò£¨3·Ö£©
×÷³öº¯Êýy=|2x+1|-|x-4|µÄͼÏó£¬
ËüÓëÖ±Ïßy=2µÄ½»µãΪ£¨-7£¬2£©ºÍ£¨6·Ö£©
ËùÒÔ|2x+1|-|x-4|£¾2µÄ½â¼¯Îª£¨7·Ö£©
µãÆÀ£º±¾Ð¡ÌâÖ÷Òª¿¼²é¼¸ÖÖÌØÊâµÄ¾ØÕó±ä»»¡¢¼òµ¥ÇúÏߵļ«×ø±ê·½³Ì¡¢Ô²µÄ²ÎÊý·½³Ì¡¢¾ø¶ÔÖµ²»µÈʽµÄ½â·¨µÈ»ù´¡ÖªÊ¶£¬¿¼²éÔËËãÇó½âÄÜÁ¦£¬¿¼²éÊýÐνáºÏ˼Ïë¡¢»¯¹éÓëת»¯Ë¼Ï룮ÊôÓÚ»ù´¡Ì⣮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

±¾Ìâ¹²ÓУ¨1£©¡¢£¨2£©¡¢£¨3£©Èý¸öÑ¡´ðÌ⣬ÿÌâ7·Ö£¬Ç뿼ÉúÈÎÑ¡2Ìâ×÷´ð£¬Âú·Ö14·Ö£®Èç¹û¶à×ö£¬ÔòÒÔËù×öµÄÇ°2Ìâ¼Æ·Ö£®
£¨1£©Ñ¡ÐÞ4-2£º¾ØÕóÓë±ä»»
ÒÑÖª¶þ½×¾ØÕóMÓÐÌØÕ÷Öµ¦Ë=3¼°¶ÔÓ¦µÄÒ»¸öÌØÕ÷ÏòÁ¿e1=
1
1
£¬²¢ÇÒ¾ØÕóM¶ÔÓ¦µÄ±ä»»½«µã£¨-1£¬2£©±ä»»³É£¨9£¬15£©£®Çó¾ØÕóM£®
£¨2£©Ñ¡ÐÞ4-4£º×ø±êϵÓë²ÎÊý·½³Ì
ÔÚÖ±½Ç×ø±êϵxOyÖУ¬ÒÑÖªÇúÏßCµÄ²ÎÊý·½³ÌÊÇ
x=2+2sin¦Á
y=2cos¦Á
£¨¦ÁÊDzÎÊý£©£®
ÏÖÒÔÔ­µãOΪ¼«µã£¬xÖáµÄÕý°ëÖáΪ¼«Öᣬ½¨Á¢¼«×ø±êϵ£¬Ð´³öÇúÏßCµÄ¼«×ø±ê·½³Ì£®
£¨3£©Ñ¡ÐÞ4-5£º²»µÈʽѡ½²
½â²»µÈʽ|2x+1|-|x-4|£¾2£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

±¾Ìâ¹²ÓУ¨1£©¡¢£¨2£©¡¢£¨3£©Èý¸öÑ¡´ðÌ⣬ÿÌâ7·Ö£¬Ç뿼ÉúÈÎÑ¡2Ìâ×÷´ð£¬Âú·Ö14·Ö£®Èç¹û¶à×ö£¬ÔòÒÔËù×öµÄÇ°2Ìâ¼Æ·Ö£®×÷´ðʱ£¬ÏÈÓÃ2BǦ±ÊÔÚ´ðÌ⿨ÉÏ°ÑËùÑ¡ÌâÄ¿¶ÔÓ¦µÄÌâºÅÍ¿ºÚ£¬²¢½«ËùÑ¡ÌâºÅÌîÈëÀ¨ºÅÖУ®
£¨1£©Ñ¡ÐÞ4-2£º¾ØÕóÓë±ä»»
±ä»»T1ÊÇÄæʱÕëÐýת90¡ãµÄÐýת±ä»»£¬¶ÔÓ¦µÄ±ä»»¾ØÕóΪM1£¬±ä»»T2¶ÔÓ¦µÄ±ä»»¾ØÕóÊÇM2=
11
01
£»
£¨I£©ÇóµãP£¨2£¬1£©ÔÚT1×÷ÓÃϵĵãQµÄ×ø±ê£»
£¨II£©Çóº¯Êýy=x2µÄͼÏóÒÀ´ÎÔÚT1£¬T2±ä»»µÄ×÷ÓÃÏÂËùµÃµÄÇúÏß·½³Ì£®
£¨2£©Ñ¡ÐÞ4-4£º¼«×ø±êϵÓë²ÎÊý·½³Ì
´Ó¼«µãO×÷Ò»Ö±ÏßÓëÖ±Ïßl£º¦Ñcos¦È=4ÏཻÓÚM£¬ÔÚOMÉÏÈ¡Ò»µãP£¬Ê¹µÃOM•OP=12£®
£¨¢ñ£©Ç󶯵ãPµÄ¼«×ø±ê·½³Ì£»
£¨¢ò£©ÉèRΪlÉϵÄÈÎÒâÒ»µã£¬ÊÔÇóRPµÄ×îСֵ£®
£¨3£©Ñ¡ÐÞ4-5£º²»µÈʽѡ½²
ÒÑÖªf£¨x£©=|6x+a|£®
£¨¢ñ£©Èô²»µÈʽf£¨x£©¡Ý4µÄ½â¼¯Îª{x|x¡Ý
1
2
»òx¡Ü-
5
6
}
£¬ÇóʵÊýaµÄÖµ£»
£¨¢ò£©ÔÚ£¨¢ñ£©µÄÌõ¼þÏ£¬Èôf£¨x£©+f£¨x-1£©£¾b¶ÔÒ»ÇÐʵÊýxºã³ÉÁ¢£¬ÇóʵÊýbµÄÈ¡Öµ·¶Î§£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º2011Ä긣½¨Ê¡¸£ÖÝÈýÖиßÈýÁ·Ï°ÊýѧÊÔ¾í£¨Àí¿Æ£©£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

±¾Ìâ¹²ÓУ¨1£©¡¢£¨2£©¡¢£¨3£©Èý¸öÑ¡´ðÌ⣬ÿÌâ7·Ö£¬Ç뿼ÉúÈÎÑ¡2Ìâ×÷´ð£¬Âú·Ö14·Ö£®Èç¹û¶à×ö£¬ÔòÒÔËù×öµÄÇ°2Ìâ¼Æ·Ö£®×÷´ðʱ£¬ÏÈÓÃ2BǦ±ÊÔÚ´ðÌ⿨ÉÏ°ÑËùÑ¡ÌâÄ¿¶ÔÓ¦µÄÌâºÅÍ¿ºÚ£¬²¢½«ËùÑ¡ÌâºÅÌîÈëÀ¨ºÅÖУ®
£¨1£©Ñ¡ÐÞ4-2£º¾ØÕóÓë±ä»»
±ä»»T1ÊÇÄæʱÕëÐýת90°µÄÐýת±ä»»£¬¶ÔÓ¦µÄ±ä»»¾ØÕóΪM1£¬±ä»»T2¶ÔÓ¦µÄ±ä»»¾ØÕóÊÇ£»
£¨I£©ÇóµãP£¨2£¬1£©ÔÚT1×÷ÓÃϵĵãQµÄ×ø±ê£»
£¨II£©Çóº¯Êýy=x2µÄͼÏóÒÀ´ÎÔÚT1£¬T2±ä»»µÄ×÷ÓÃÏÂËùµÃµÄÇúÏß·½³Ì£®
£¨2£©Ñ¡ÐÞ4-4£º¼«×ø±êϵÓë²ÎÊý·½³Ì
´Ó¼«µãO×÷Ò»Ö±ÏßÓëÖ±Ïßl£º¦Ñcos¦È=4ÏཻÓÚM£¬ÔÚOMÉÏÈ¡Ò»µãP£¬Ê¹µÃOM•OP=12£®
£¨¢ñ£©Ç󶯵ãPµÄ¼«×ø±ê·½³Ì£»
£¨¢ò£©ÉèRΪlÉϵÄÈÎÒâÒ»µã£¬ÊÔÇóRPµÄ×îСֵ£®
£¨3£©Ñ¡ÐÞ4-5£º²»µÈʽѡ½²
ÒÑÖªf£¨x£©=|6x+a|£®
£¨¢ñ£©Èô²»µÈʽf£¨x£©¡Ý4µÄ½â¼¯Îª£¬ÇóʵÊýaµÄÖµ£»
£¨¢ò£©ÔÚ£¨¢ñ£©µÄÌõ¼þÏ£¬Èôf£¨x£©+f£¨x-1£©£¾b¶ÔÒ»ÇÐʵÊýxºã³ÉÁ¢£¬ÇóʵÊýbµÄÈ¡Öµ·¶Î§£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÊýѧ À´Ô´£º²»Ïê ÌâÐÍ£º½â´ðÌâ

±¾Ìâ¹²ÓУ¨1£©¡¢£¨2£©¡¢£¨3£©Èý¸öÑ¡´ðÌ⣬ÿÌâ7·Ö£¬Ç뿼ÉúÈÎÑ¡2Ìâ×÷´ð£¬Âú·Ö14·Ö£®Èç¹û¶à×ö£¬ÔòÒÔËù×öµÄÇ°2Ìâ¼Æ·Ö£®×÷´ðʱ£¬ÏÈÓÃ2BǦ±ÊÔÚ´ðÌ⿨ÉÏ°ÑËùÑ¡ÌâÄ¿¶ÔÓ¦µÄÌâºÅÍ¿ºÚ£¬²¢½«ËùÑ¡ÌâºÅÌîÈëÀ¨ºÅÖУ®
£¨1£©Ñ¡ÐÞ4-2£º¾ØÕóÓë±ä»»
±ä»»T1ÊÇÄæʱÕëÐýת90¡ãµÄÐýת±ä»»£¬¶ÔÓ¦µÄ±ä»»¾ØÕóΪM1£¬±ä»»T2¶ÔÓ¦µÄ±ä»»¾ØÕóÊÇM2=
11
01
£»
£¨I£©ÇóµãP£¨2£¬1£©ÔÚT1×÷ÓÃϵĵãQµÄ×ø±ê£»
£¨II£©Çóº¯Êýy=x2µÄͼÏóÒÀ´ÎÔÚT1£¬T2±ä»»µÄ×÷ÓÃÏÂËùµÃµÄÇúÏß·½³Ì£®
£¨2£©Ñ¡ÐÞ4-4£º¼«×ø±êϵÓë²ÎÊý·½³Ì
´Ó¼«µãO×÷Ò»Ö±ÏßÓëÖ±Ïßl£º¦Ñcos¦È=4ÏཻÓÚM£¬ÔÚOMÉÏÈ¡Ò»µãP£¬Ê¹µÃOM•OP=12£®
£¨¢ñ£©Ç󶯵ãPµÄ¼«×ø±ê·½³Ì£»
£¨¢ò£©ÉèRΪlÉϵÄÈÎÒâÒ»µã£¬ÊÔÇóRPµÄ×îСֵ£®
£¨3£©Ñ¡ÐÞ4-5£º²»µÈʽѡ½²
ÒÑÖªf£¨x£©=|6x+a|£®
£¨¢ñ£©Èô²»µÈʽf£¨x£©¡Ý4µÄ½â¼¯Îª{x|x¡Ý
1
2
»òx¡Ü-
5
6
}
£¬ÇóʵÊýaµÄÖµ£»
£¨¢ò£©ÔÚ£¨¢ñ£©µÄÌõ¼þÏ£¬Èôf£¨x£©+f£¨x-1£©£¾b¶ÔÒ»ÇÐʵÊýxºã³ÉÁ¢£¬ÇóʵÊýbµÄÈ¡Öµ·¶Î§£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸