Page 49 - 高中数学小题狂做·必修第二册·提优版
P. 49

!!!!! ?@{6                             !
                                                                                                     !
                                                                                                     (0(!
        +':< ! ¥› 9 " ‘#! ( ; ! % RA¦ˆYò" @A ! ( ;                 (           '             '    '    (
                                                           * # " $ "  " * # " $ "  " † * # # $ "  +  &   +
                                             "
         ! % nT\" †'€ 9W- ¥›: " ‘#! ( ! % ;! ' ST                 ,           ,             ,    ,    ,
         d" @A ! (;! % ; ! ' STd" †'€ :¼3- ¥›            ( " 2 '
                                                           ,   #
                                         (   (    (
                         $
                                $
                                      $
         ; " ‘#* # ! %7! ' "* # ! % * # ! ' "  +  "  " †'  # ' $ š›ˆ¤K"$æE{h" @A ( (4 ( 4 ( %'
                                         %   %    ,
                                                      $
                                              $
                                      $
         € ;W- ¥› < " ‘#* # ! (; ! % "* # ! ( &* # ! % )  !"' x-8? ! a0# ( $š.8Rj^Ù¦§{¨* "
                $
         * # ! ( ! % " ( & ( ) ( " ' " †'€ <¼3'            (0 " ((fˆ" !Ù¦§|}{¨'f" ^Ù¦§{¨(%
                   %   %   ,   ,                           fˆ" !Ù¦§|}{¨ ,f" @A &" 1 ' " , 2 '
        ,'< ! !( " % " ' " ,"Ñ¢%fn¦$E" (#8 " 9$:"          # % $š.8Rj!Ù¦§{¨'f" |(%00k" !Ù¦
         @GR=$ÁÂG# ( " % $"# ( " ' $"# ( " , $"# % " ( $"# % " ' $"  §{¨,f" |($00k" !(00±©éÓ"" !Ù¦§
         # % " , $"# ' " ( $"# ' " % $"# ' " , $"# , " ( $"# , " % $"# , " ' $" î(% |}{¨'f$©éÓî 30±" !Ù¦§|}{¨,f
         cÁÂ" m68( &% 9(&("0G%fnSª$‚E                     $©éÓî '0±" »* ^±©éÓ!°1h7{¨!Ù¦
                         %
         Â" &, 9 ), 8 4 0 " v9 4 8 " OPõö$# 8 " 9 $ G# ( " % $"                                       '0
                            %
                %
                                                           §$÷1™›(%00k+ #Aö ! " @A * # ! $ "             "
         # ( " ' $"# ( " , $"# % " ' $"# % " , $"# ' " % $"# ' " , $"# , " ' $" î#c                  (00
                            #   %                          0'''
         ÁÂ" †@t50*"          "   '
                           (% '                            # ' $‘#8 & 9 "(, " 9 0& "# + $m8 "(0 " 9 ", " &e(00
        !$' x-8? ! a0# ( $»Aö! #* ¢À%æv©¢+"                                                       (
                                                           ±©éÓ!{¨¦§–@|÷1$ØHE#                       + ( (00
         vM–^æ¢ñ$d}À5N¢ñ$dYÀ" £/æ=                                                               (00
                                             ,+' %         +(0+'0& # (00+(0&%00 $ +,0& # (00+(0&,00 $ +'0&
         çt%SÕAö$wX%E" ‘Ÿ* # ! $ "               "   '
                                             3+$ 3         %00+,+(00 ) "%000'
                                                           # , $m8 "(( " 9 "' " &e(00±©éÓ!{¨¦§–@

                                                                            (
                                                           |÷1$ØHE#            + ( (00+((+30& # (00+((&
                                                                           (00
                                                           %00 $ +'0&%00+'+30& # %00+'&,00 $ +'0 ) "(##0 "
                                                           @A`²õö,ó©éÓ$¦ˆ,óy1¦§$RE
                                                           #(,f" õöÕª,ó^Ù¦§((f" !Ù¦§'f'
         # % $»Aö" #* M¢ñYÀ+"* –Kæ¢ñYÀ+ #A
                                                           !#' x-8? ! a0# ( $ÂÃ.8" < 0 ( 30 " (00 $" ,_‚
             "
         ö! KK "( " % " ' " , " 2 " ‘#M ¢" @AMåR=!–(
                                                           #2R“¬$fßZ÷" “[d( 30 " 32 $"( 32 " #0 $"( #0 "
         æ" –'æM–2æ¢ñYÀ' £/æ=çt%SÕAö
                                                           #2 $"( #2 " *0 $"( *0 " *2 $"( *2 " (00 $" ‘#30 , <5 (00 " š
         $wX%E"
                                                           2 B , < 5 2 # B&( $" B 0/ " @AB $R=¢:G(, " (2 "
                                                                               D
                                                           ($ " (3 " (# " (* " VfßZ÷ ¥ Õ $/0: “ [d V"
                                                           . ' B )'* " B "(, " (2 " ($ "  ' # (,&(2&($)'* $
                                                           -  $0              @A       $0       &2 8 # #&,&
                                                           /    %0) B
                                                            2 8 % % " B "(3 " (# " (* "
                                 $       $      $       $
         @A* # " $ "* # ! (;! ';! 2 "* # ! ( &* # ! ' &* # ! 2           (
                                                           % $ "( " aû8 "   '
           ' ,+'+' ,+'+%+(+' '             $   ( %%                     (00
         "   &        &              "   &   &   "   '
           3 3+$+2 3+$+2+,+' 3 '2 '2 '2                                                               (
                                                           # % $š# ( $ "$EÃ" û0 <0 ( #2 " *0 $ $/0#      +
        !!' x-8? ! a0# ( $ š.8Rj!#¤z"" ªÀ                                                           (00
         !š¥K"0s$0'2$G,¤" “[dˆ¤( " ˆ¤% "                    %0)(3                           (     %0)(#
                                                           %    +2"0', - <0 ( *0 " *2 $ $/0# (00 +%   +2"
         ˆ¤, " õ¤,' @A!r+'$^¤z"" ªÀ!š
                                                                                   (    %0)(* +2"0'(' -1,
                                                           0'% - < 0 ( *2 " (00 $ $/0#
         ¥K"0s$0'2$50#           , "0'2'                                          (00 +%
                                 #
                                                           r“23w3¢$3ö(å"" < 0 ( #2 " *0 $ $G,ö"
         # % $ »Aö! #* !r+'$^¤ˆ¤z"" ªÀ!
                                                                      " " " "
                                                           “[Õ#! ( ! % ! ' ! , < 0 ( *0 " (00 $ $G'ö" “[Õ
         $š¥K"0s$0'2 +" Aö " #* !r+'$^¤
                                                                " " "
                                                           #" ( " % " ' 43¢$3ö(å"Ñ¢%ö(å" &w
         õ¤z"" ªÀ!$š¥K"0s$0'2 +" Aö# #
                                                                         "    "     "     "    "     "    "
         * !r+'$^fˆ¤M^fõ¤"" ªÀ!$š¥                        XŒ÷#1 ! ( ! % ! ( ! ' ! ( ! , ! ( " ( ! ( " % ! ( " ' ! % ! '
                                                                "     "     "     "     "     "     "     "
         K"0^¤s$0'2 " ^¤ns$0'2 +" & #"!"&                  ! % ! , ! % " ( ! % " % ! % " ' ! ' ! , ! ' " ( ! ' " % ! ' " '
                                                               "     "    "    "     "    2" î%(f" Aö* 3
                                            '         (    ! , " ( ! , " % ! , " ' " ( " % " ( " ' " % " '
         !" " ! " " STd' š.8Rj" * # ! $ "    " * # ! $ "  "
                                            ,         ,    ¢%ö(å"±kG(ö ! Ùå+ @ë$wX%G0
   44   45   46   47   48   49   50   51   52   53   54