第二章 解析几何初步（练案二）-2020年高中同步教与学数学(北师大版必修2)

书书书 !"# ! $%&'() !! ! !"#!"$%& !!! ! !"$'()*(+ ! ! ,- " " !"# ! ! $%&'() "! !"# "#" $%&'( ! ! ) ! ( " !! # $%&' (%)*' +%,&' -% *+, .! "# # -./0 $ 10 % " /" ! /" #! )2$%&'3 " !! # $%)*' (%"0*' +%"0*' 4 ..*' -%&' 0! 5678 $ ! 9:;<"#=>?;$%&' % " ;<"#$ %&'( /0&' % # %&'( &' $"#@>;< % $ "#%&' ! $AB & !# &' $!% "1&' ' C"#ABDEF;;GHIJ ! K L ! MN$78> " !! # $%" O (%. O +%0 O -%) O " !"# " ! $%&(* )! -.0 & " /. ! " #! ' " " ! /. # $"#$&P3 " !! # 槡$%" (%/" +%* -%/. *! .0 & " /. ! ( #! ' " ( ! ) # $"#$&PQR " ! ) ( $S( " !! # $%" (%) +%" 4 0 -%" 4 ) 2! !"# )* $&P3 . ! T"#U ) 0VWXYZ[\] )*' ^ ! _`"#$&P3 " !! # $%/0 (%/ " 0 +%0 -% " 0 " !"# # ! $%&'()+(*&,- 3! !"#$&P( /" ! )"#$%&'3 " !! # $%,&' (%&' +%)*' -%"0*' 1! ab"# # " ! # . ! # 0 $&Pcd( + " ! + . ! + 0 ! ef_g ! ) " !! # $%+ " % + . % + 0 (%+ 0 % + " % + . +%+ 0 % + . % + " -%+ " % + 0 % + . ,! ab & " /) ! 0 #! ' " . ! "* #! !"# # $ %&'3"# &' $%&'$;h ! i"# # $&P ! " ./# ! ! $%&'()0(*12&./34 "&! "# # -.jk ( l ( mno ! # $%&'( ! ! &P( + ! ) " !! # $%+456 !& & (%+784 !& & +%+456 !$ & -%+784 !$ & ""! ab"# # $Zp.0 " , ! " # 1 " ,9" ! :;6 ! 9" #! ) " !! # $% ! ;q3"# # $%&' (% ! ;q*3"# # $%&' +% ! *;q3"# # $%&' -%"1&'/ ! ;q3"# # $%&' ".! abr0 ) " /0 ! ) #! * " 0 ! . #! .0 % " . ! /" # $"# # C#s )* >tu0 ! " " # i"# # $&P + $vSwx % " . # i"# # $%&' ! $vSwx ! " ./# " ! 5 +#:;6 ! & $!%% 6 !' % " # . &789'()0 (*&:; "0! !"#%&' ! $vSwx3 % 2 ! 0 % " ) ) ! )y"#$&P + $vSwx3 ! ")! ab"# # $&P + z{ + & /" ! )"# # $%&'$vS wx3 ! "*! |"# # .0 ) " 784 " ! 456 . " #! * " & ! " #! i"# # $%&'$ vSwx ! * " * !" !!! #$ !!!!!!!!!!!!!!!!!!!!!!!!! %&'()*+ ! ,- " . # " ./# # ! +(*<,&=#>%?@ "2! ab0 ) " /" ! " #! * " " ! . #! - " /. ! . # ("# # }$l0 ! ) "# ! . # ! "3! !l0 ) " . ! . #! * " , ! & #! - " & ! / #" ,/ ' & # u# ! ) " , 9 " / $S QR ! "1! ab ) " " ! " #( * " 0 ! * #( - " , ! 3 #( 0 " /" ! / # m0u# ! i"#Z p . #,"9/! " AB# ! ! $%(*&CD34 " " # ",! ef " " # _g ! ~������$�"� � 1 1���� # $����� " 4� �� #! ��� 2 �g ! � 2#:;6 ! # 1 # ! �� ! ! 3��C���$�' ! �O' �