ÅàÑøÄÜÁ¦
11¡¤ax£¡Ü0£¨a£¾0ÇÒa¡Ù1£©£¬Çóy=2a2x£3¡¤ax+4µÄÖµÓò. 22111½â£ºÓÉa2x+¡¤ax£¡Ü0£¨a£¾0ÇÒa¡Ù1£©Öª0£¼ax¡Ü.
2221Áîax=t£¬Ôò0£¼t¡Ü£¬y=2t2£3t+4.½èÖú¶þ´Îº¯ÊýͼÏóÖªy¡Ê£Û3£¬4£©.
28.£¨2004ÄêÈ«¹ú¢ó£¬18£©½â·½³Ì4x+|1£2x|=11. ½â£ºµ±x¡Ü0ʱ£¬1£2x¡Ý0.
7.Èôa2x+
Ô·½³Ì?4x£2x£10=0?2x=½â£©. µ±x£¾0ʱ£¬1£2x£¼0. Ô·½³Ì?4x+2x£12=0?2x=£414141111?2x=£¡À£¼0£¨Î޽⣩»ò2x=+£¾1Öªx£¾0£¨ÎÞ22222217¡À?2x=£4£¨Î޽⣩»ò2x=3?x=log23£¨ÎªÔ·½³ÌµÄ½â£©. 22̽¾¿´´Ð ££9.Èô¹ØÓÚxµÄ·½³Ì25|x+1|£4¡¤5|x+1|£m=0ÓÐʵ¸ù£¬ÇómµÄȡֵ·¶Î§. £½â·¨Ò»£ºÉèy=5|x+1|£¬Ôò0£¼y¡Ü1£¬ÎÊÌâת»¯Îª·½³Ìy2£4y£m=0ÔÚ£¨0£¬1£ÝÄÚÓÐʵ¸ù.Éèf£¨y£©=y2
£4y£m£¬Æä¶Ô³ÆÖáy=2£¬¡àf£¨0£©£¾0ÇÒf£¨1£©¡Ü0£¬µÃ£3¡Üm£¼0. £½â·¨¶þ£º¡ßm=y2£4y£¬ÆäÖÐy=5|x+1|¡Ê£¨0£¬1£Ý£¬¡àm=£¨y£2£©2£4¡Ê£Û£3£¬0£©. ¡ñ˼ÎòС½á 1.ÀûÓ÷ÖÊýÖ¸ÊýÃݵÄÒâÒå¿ÉÒ԰ѸùʽµÄÔËËãת»¯ÎªÃݵÄÔËË㣬´Ó¶ø¼ò»¯¼ÆËã¹ý³Ì. 2.Ö¸Êýº¯Êýy=ax£¨a£¾0£¬a¡Ù1£©µÄͼÏóºÍÐÔÖÊÊÜaµÄÓ°Ï죬Ҫ·Öa£¾1Óë0£¼a£¼1À´Ñо¿. 3.Ö¸Êýº¯ÊýµÄ¶¨ÒåÖØÔÚ¡°ÐÎʽ¡±£¬Ïñy=2¡¤3£¬y=2£¬y=3x1xx?2£¬y=3x+1µÈº¯Êý¶¼²»·ûºÏÐÎʽy=ax£¨a
£¾0£¬a¡Ù1£©£¬Òò´Ë£¬ËüÃǶ¼²»ÊÇÖ¸Êýº¯Êý. ¡ñ½ÌʦÏÂÔØÖÐÐÄ ½Ìѧµã¾¦ 1.±¾Ð¡½ÚµÄÖØµãÊÇÖ¸Êýº¯ÊýµÄͼÏóºÍÐÔÖʵÄÓ¦ÓÃ.¶ÔÓÚº¬ÓÐ×Öĸ²ÎÊýµÄÁ½¸öº¯Êýʽ±È½Ï´óС»òÁ½¸öº¯ÊýʽÓÉÓÚ×Ô±äÁ¿µÄ²»Í¬È¡Öµ¶øÓв»Í¬´óС¹ØÏµÊ±£¬±ØÐë¶Ô×Öĸ²ÎÊý»ò×Ô±äÁ¿È¡Öµ½øÐзÖÀàÌÖÂÛ.ÓúÃÓûîÖ¸Êýº¯Êýµ¥µ÷ÐÔ£¬Êǽâ¾öÕâÒ»ÀàÎÊÌâµÄ¹Ø¼ü. 2.¶Ô¿É»¯Îªa2x+b¡¤ax+c=0»òa2x+b¡¤ax+c¡Ý0£¨¡Ü0£©µÄÖ¸Êý·½³Ì»ò²»µÈʽ£¬³£½èÖú»»Ôª·¨½â¾ö£¬µ«Ó¦ÌáÐÑѧÉú×¢Òâ»»Ôªºó¡°ÐÂÔª¡±µÄ·¶Î§. ÍØÕ¹ÌâÀý ¡¾Àý1¡¿ Èô60a£½3£¬60b£½5.Çó12
1?a?b2(1?b)
µÄÖµ.
½â£ºa=log603£¬b£½log605£¬ 1£b£½1£log605£½log6012£¬
1£a£b£½1£log603£log605£½log604£¬
log6041?a?b£½£½log124£¬ log60121?b12
1?a?b
2(1?b)
£½12
1log1242£½12log122£½2.
¡¾Àý2¡¿ ·½³Ì2x=2£xµÄ½âµÄ¸öÊýΪ______________.
½âÎö£º·½³ÌµÄ½â¿É¿´×÷º¯Êýy=2xºÍy=2£xµÄͼÏó½»µãµÄºá×ø±ê£¬·Ö±ð×÷³öÕâÁ½¸öº¯ÊýͼÏó£¨ÈçÏÂͼ£©.
ÓÉͼÏóµÃÖ»ÓÐÒ»¸ö½»µã£¬Òò´Ë¸Ã·½³ÌÖ»ÓÐÒ»¸ö½â. ´ð°¸£º1
ÆÀÊö£ºÎÞ·¨Ö±½ÓÇó½âµÄ·½³ÌÎÊÌ⣬³£ÓÃ×÷ͼ·¨À´½â£¬×¢ÒâÊýÐνáºÏµÄ˼Ïë.