3.1 空间向量及其运算（学案二）2020年高中同步教与学数学（人教B版选修2-1）

书书书 !"# ! $%&'()*+, !!" ! !"#$%&'( !!"!" ! !"#$)*+'( ! " ,- " !! !"#"$% !! ./01 ! !"#$)23 !"#$%&'()*+ ! ,-./0&'(12)*3 45678 ! " " # &' $ 91:;<=&('>?&' ! " # # @A& ' $ B&CAD(1&EFGHBI&'J@A(&' ! " $ # K &' $ LMNOMPQ(&'>?K&' ! 7R #! " % # &'(D S $ GH&' ! (1&EF(DS>?&'(DSJT ! 7U " ! " ! " & # VE $ 1&EFW!(XE>?&'(VE ! " ' # YE& ' $ Z[$%I\&'(VE]@/4JPQ ! ^_\&'>? YE&'J/4&' ! Z ! /4` " ! 7U ! # "# ab $ ! YE&' " J/4&' # cd&'(VE@]/4 JPQ ! /4&'(VEefPQ ! YE&'(VEefgP Q ! " YE&' " J/4&' # (=&efB& ! hefi& ! Z jkl ! # " # $ # %# !!! ./04 ! !"#$)56 # 7689:#$'( mneo/0&'(Epqrs^ ! tuv$% ! wxyz $%&'({s % |s<}~&'qr ! " " # /0&'�<(� ��s^</4���s^ ! -$%&'hB��� ! " # # /0 &'�<(���s^ ! -$%&'hB��� ! Z�kl "# $%% " ("" $%% " )" " $ $%% " )$ " $%% $) $%% $%)%% $%% " )% " # $%% " ! _h�c� ! GH@{ &'(1&EF����@� ! ��(�E��v�(&'� c_\@{&'(< ! R��`78 ! �o_�<&'>? & � �&' ' ! " $ # $%&'({s<}~&'qrN/0&'I� ! ��Zjqr� $ ! {s��� $ !)"(")! ( " {s�Q� $" ! )" # )$(!) " ")$ #( #  ¡� $" ! )& # !( ! !)&! ( ! " !)" # ( ! ! ) ! "! " % # ¢��£ $ ! 1¤�&'�< ! ��@{&'(¥¦§ <g¨ ( " ��gY0(&'(<A`©_��&'Rª�( /4«0¬(-�EWGH(&' ! ;< ! "! !"#$%&'()*+, ! ! " " -./0123 4%567(89: # '12;9 $" <=>?@AB8C " D. /CE6789: " FGH%&'(+,I?@AB8C " JK L89+, ! #! +,MN0OPQRSTUVWXYZW[ " \]@^ 7_`a % # " $ b ! & # " ! " !( ! # ! " c ! " ( ! # & # # $ b !& * " ! ! " ( ! ! # " c ! " (! # & # $ $ ! " !) ! # !) ' ) ! ' !( # ! " ) ! # ) ' ) ! ' $ ! & # % $ ! ! " ) ! ! # ) ' ) ! ! ' ( ! # ! " )! # ) ' )! & $ ! !! &'()*+ !! => " ! !"#$)?@23 $ A " % ! ­®j¯°± $ " " # ²³&'Iy@A ) " # # LMgB ! ´=&@BCT@A(µ�&'cgc@A (&' ) " $ # @A(¶K&' ! ·LMgB ! ^OMIygB ! _I¸ ¹º»¼ ) " % # $%½b¢�¶K&'¾e©/¿vBI/0À ) BC ! de+,0]fghijkl ! DE ! " " # gIy ! ²³&'cdTR " ! =&Ácg»y( ! W©²³&'g Iy@A ! ¢�¶K&'@AÂÃ9Ä¢�ÅÆ $ IcT@A ! Çc= &@B ! ¢�ÅÆÈIge ! " # # c ! -É&'@AÂÃ9Ä(¢�ÅÆ ! _¢�ÅÆÊ ! ËÌ1- @Í(1&EF(LM{½Î¤Ï ! ÐÑÒx ! GH@A&'(1& EF(LMcÓÔÕ( ! @A&'(LM³Ö91½bp ! " $ # º» ! ÐR!LMgB(×�j ! Z[OM@B ! ØÙ_\&'� g/4 ! Ú_\&'(=&�g@B ! _N&'@A(yz@ ÛÜ ! " % # º» ! !$%½ÝIM ! ÞÑMߢ�Nàá¶K&'@A(& ' ! â_¢�&'W!(XE@�`ÑM ! ¢Å@�XE»yI �/0