2022Ó¢ÓïÖܱ¨(JXG)´ð°¸

×÷ÕߣºÍøÂç À´Ô´£º 2022-03-18   ÔĶÁ£º´Î

20.½â:(1)ÉèÍÖÔ²CµÄ½¹¾àΪ2c(c>0),ÓÉÌâÖª,µãP(c,¡Ày2),b=¡Ì2,ÔòÓÐ ~С¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­,¡­¡­¡­¡­¡­¡­¡­2·ÖÓÖa=b c2=2 ,¡àa=8,c2-6Òò´Ë,ÍÖÔ²CµÄ±ê×¼·½³Ì

2022Ó¢ÓïÖܱ¨(JXG)´ð°¸Í¼Æ¬2022Ó¢ÓïÖܱ¨(JXG)´ð°¸Í¼Æ¬

20.½â:(1)ÉèÍÖÔ²CµÄ½¹¾àΪ2c(c>0),ÓÉÌâÖª,µãP(c,¡Ày2),b=¡Ì2,ÔòÓÐ ~С¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­,¡­¡­¡­¡­¡­¡­¡­2·ÖÓÖa=b c2=2 ,¡àa=8,c2-6Òò´Ë,ÍÖÔ²CµÄ±ê×¼·½³ÌΪ¡£ =1.¡­2(2)ÁªÁ¢¿É½âµÃx=2,y=1»òx=-2,y=-1,¼´M(2,1)»ò(-2,-1) 2ÉèÖ±Ïߵķ½³ÌΪy=2x m,ÓÉ2rtÏûÈ¥yµÃx2 2mx 2(m2-2)=0.5·Öx2 4ÒÀÌâÒâ¿ÉÖª,¡÷=4m2-8(m2-2)>0,¼´-2

2022Ó¢ÓïÖܱ¨(JXG)´ð°¸Í¼Æ¬

14.¡¾´ð°¸¡¿16¡¾ÃüÌâÒâͼ¡¿±¾Ì⿼²éµ¼ÊýµÄ¼¸ºÎÒâÒåµÄÓ¦Óá¾½âÎö¡¿ÒòΪֱÏßx-2y 3=0µÄбÂÊΪ,ËùÒÔº¯Êýf(x)ÔÚx=1´¦µÄÇÐÏßµÄбÂÊΪ-2,É躯Êýf(x)ÔÚ2x=1´¦µÄÇÐÏß·½³ÌΪy=-2x m,ÔòÓÖÒòΪֱÏß2x-3y 6=0¹ýµãA3y),ËùÒÔ6-3y 6=0,¼´y=4ËùÒÔA(3,4),ËùÒÔ4=-6 m,¼´m=10,ËùÒÔº¯Êýf(x)ÔÚx=1´¦µÄÇÐÏß·½³ÌΪy=-2x 10,ËùÒÔf(1)=-2 10=8,f(1)=-2,ËùÒÔ3f(1) 4f(1)=24-8=16,¹Ê´ð°¸Îª16

2022Ó¢ÓïÖܱ¨(JXG)´ð°¸Í¼Æ¬

ÒÔÉϾÍÊÇ2022Ó¢ÓïÖܱ¨(JXG)´ð°¸£¬¸ü¶àÓ¢ÓïÖܱ¨´ð°¸Çë¹Ø×¢±¾ÍøÕ¾¡£

·ÖÏí¸øÐ¡»ï°éÃÇ£º
±¾ÎĹؼü´Ê£º ¸ßÒ»
Èç¹û±¾ÎÄÇÖ·¸ÁËÄúµÄȨÀû£¬ ÇëÁªÏµ±¾ÍøÁ¢¼´×ö³ö´¦Àí£¬Ð»Ð»¡£
µ±Ç°Î»ÖãºÖ÷Ò³ > ¸ßÒ» > ¡¶2022Ó¢ÓïÖܱ¨(JXG)´ð°¸¡· ×ªÔØÇë×¢Ã÷³ö´¦¡£
ÏÂһƪ£ºÃ»ÓÐÁË
Ïà¹ØÎÄÕÂ
  • 2022Ó¢ÓïÖܱ¨47ÆÚ´ð°¸

    2022Ó¢ÓïÖܱ¨47ÆÚ´ð°¸

  • Ó¢ÓïÖܱ¨22ÆÚ¸ßÒ»´ð°¸

    Ó¢ÓïÖܱ¨22ÆÚ¸ßÒ»´ð°¸

  • 2022³õ¶þÓ¢ÓïÖܱ¨31´ð°¸

    2022³õ¶þÓ¢ÓïÖܱ¨31´ð°¸

  • 2022Ó¢ÓïÖܱ¨¿Î±ê×ÛºÏ38´ð°¸

    2022Ó¢ÓïÖܱ¨¿Î±ê×ÛºÏ38´ð°¸