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Elétrica

apostila de elétricidade básica

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                 2401   Eletricidade   D ELETRICIDADE      !" # %&&7(1               ! "$%& ' ( )!*+,)+ %-$*+! . ! "$%& ( %/0$& 1& +*+$& '2 ! "$%&  ( +*+$& *+$+)& '3 ! "$%& ( $-0+! 1 !0,%+ 1 +*+$& . ! "$%& . ( +01$&*  ! !+$&* ! "$%& 4 ( !0,%+ 1 +*+$& 0&+1!+ .. ! "$%& 3 ( &$50+! / +*+$& 0&+1!+ 47 ! "$%& 7 ( +*+$& $*+8,+& 72 9: ; <                                                                ! "  $ % )*+ !,+) $ %"" %!%&!"  % !% #!" ' -!  ))*+( %! ) " "%"!%!" "  !"     "%"! + . -!  ))*+ • !* %! " "  " +  # "' • %* " , "  !"' • ", " %#!""  & % %' • -*   " .0" "! # *%! "2)'   &!'()*+, '-+    /   01  +2 +)!     • 4  5   "%%!"  %" "! #! %!  !  %" • 325! % 76   :  4 ) ;!  !"   !"   <+=? <". 6 " !5," "!? 6 #! "! #!" !? #! " !J #! !J < K" %6#!"  !J •    %!" + "6% 6 " %8 :)  2 ( 325! !A B AC F!" BC H"  BHC I!! BIC " "%5 BC -"! B-C ,% BΩC % BC < B2< 01 +=) !,+)  " %!  %   .0"  "! " *%!   .0"  6' =    ] !? B Ω C ρ D !) " %! B Ω ⋅  C  D "%%!" BC  ] .0" !) B   C ρ ⋅  +( %!" "  !" +  "  !? #!' 325! 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D  ⇒ #" $ !$  =   / B .   +  +    −    =  / B 2    −   +    −    −  +    =   @  3 $! !! !$3 2  !&! %%! !  3 C#"  % & $$ !  3"  $&!%%2  !&! %%! !   %  ,!% !!$%!(!%56>  B     −   +   +    =  <  !% %&$ !%  ! $  =   −   %  =   −    0$$   =   !   = −    %        B C ; 2% %  . ,&! !%% D!% &!! 7:!$!!$$E%$  '&  ,! ,1  F#" $ 0E $!< & >!$:!$&!# 0E $!&!?   %%! !$&!  J(!  Ω    Ω  %" 5  %1 3"  5   5 .   (@5 &! !%% $( %!$&! 5 !  5 &!  2 % !($ & $ !%$!, $& $%  $,1 $3 ! ( ! !$ 5    ⇔   5 5 5 - 3 $!  $ $ !%$!, 2  !&! %%! !&!  ( %   $& $%  $.$ !$:!$ !  $& $%  $&!(!$!% ! ( ! !$      ⇔ 5   5  5    5   %& $! 7:!$ ! &! $&!& '% ! 5 = 6  5 = 7 5"79(   ",  .0"  "!  *"!  !! # )!Q 5   5      5 ! = − 5  +  5  5 5 = − 6  5 = 7   : &! !%% %  ! ( ! !&!>J(! Ω     Ω %" 5 B$ %  %%    !& !$2  !$&!!&! !$    %" 5 • !%.0"   5 ( "!  6  !%  !0" )! " !% BC  B5C' • !%.0"  5 ( "!  6  !%  !? + )! )! " !% BC  B5C "% !"  *"! ! % " "'  <"!  !0" % " " ⇔  =  B !"D !"C  <"!  "! % " " ⇔  =  B !" 5!"C' :E &! !%% ! ( ! !&!>J(! ! ! %" #  Ω  Ω  # Ω 5  .% D  0  1 5H+" 5!.0"   !" + )! % B*"!  "! % " "% % !"C  !    + + '  # #    # ⇔   # 5 5 I&!   C %%! ! !(&!%, %(C$&!  % /%  +  C%!$$ )! ( ! !($ & $ !%$!,     )   J%  1 3"   F&!%!% & >J(!   =    = 5  % 1 3"      .      !      B! !⇒  =  !   = 7 6   5 5 !  1  .+)*! ))*+ )+  . +  . + B! !%73 &!  &! 5 B! !%73 &!   &!$ ! %%". % /%  %!,!&! !%%  %%! !&! % /%   !(&  !%   !% ,    : Ω Ω   # Ω 5     2   %  1 3"   0% %& %  ! ( ! !&!>J(!.2'!% %$2 %73 &!2  !$ 5   # ⇒   =  5  5 5  5 # 5 %   :    (@5  , !%E1 ) $$(! &! %!&!  !% 5   #  5 # # ⇒B! !%% # &!  !% ! )&$$&! $!LE1   ⎛  5 ⎞ ⎟⎟  # = = # ⎜⎜ + ⎝ 5 # ⎠  # =  ⇔ # = 5 ?1'%  # ⇔  # #  # - 3   # .84 ⎛  5 = 5 ⎜⎜ ⎝ 5 + 5  ⎞  ⎟⎟ = 5  5 ⎠   #  5  5 # 5  2+ η =  #  5  ⎛  5 ⎞ ⎟⎟ # ⎜⎜ + # ⎝ 5 # ⎠ = =  5 5 + #  5 ⋅ # + 5 . 5 # ?E1 %$2!%)&! )3 C!!$$%! !( L $-1$$ !$&!  )  %( E   3"     $! %  C ! &  %$&! 2  !&!!!%".    C"   Σ&$%!$ $ $& &$2  !$&!!&! !$!%! $  (@ 39  <"!  !0" % " " ⇔  =  B !"D !"C  <"!  "! % " " ⇔  =  B !" 5!"C'  <"! "!" 9 "2  "" % " "'            I)3)( "5!  6 "  ".0"' Ω   Ω    6    &!'(K*01!(+  (+                    1   *+ 01 )+3+)   *+ \%! "  *+ # % "!)"   !% "%"!"  % *" " !"Q "" % ' "%"!%!" "  !"  5 % *a%" ""  %" %6#!"'     .0"  % "! )&) "  !" " A % %" %6#!" )&) "  "'    4% %" %6#!" )&)  A % !0" " !% "  !"   !0" # """ b !K  ).0"  "! +  " !)' !%!%!( "!M0N < K" %6#!" "!" Φ = # ⎫ ⎪ ⎬⇒ Φ  O   <L  =  ⎪⎭ 0" % -"!      %" TU  *+#) % JK TJU #          = # = # #            = − #       5"7?(  P "  )+ , )++Q  +9 ! " !%  %  !"  # *! 1 %Q "  !"  "%"! "%" %  !"D  !"  "! "!2 '    "! +  !) %  !" 0" " ) !!%!Q " [Q I+ ,)  )+   *+'     )+ " 5*)2+ # "+  >- +9 + B%"! " %  !" K!"C ! " !% "  !"' "!"  % " # !A"  %" %!%!%! ! *a%"' ! " !%" % 2.*!  +9 " !% "  !"' ' "! % %  !" % * .0"  !0" ! " !% "  !"(   = # ⇒  ∫    ⇔    =     #          =  = ∫   ∫ #   #   ⇒   −    = ∫   ⇒    =    + ∫    # #   ' "!?  6 "  !"(    ⎧ ⎪⎪    =   ⋅    = #    ⎨ ⎪    =    ⇒    =    ⎪⎩      ⇒ ⇒    = #       ⇒ ∫      = #    ∫         ∫    = # ∫    ⇒    −    = ⎡  ⎤    #   ⎣ ⎦     ⎡  # ⎣    −     ⎤⎦       =  Q     =  Q !0"    = # '  ⇒    −    =       1  .)+ !" # % "!)"   !% "%"!" "   " !"  " % "!' "%"!%!" " !"  5 % *a%" "" " %" #!"'  %" #!" 0" " A" " % "! TU .0"  6 #!Q " [Q " !0"' !0"  6 # """ b *.  "!  "%" ) +  + $  )'  5%" +   $ +G!' %  .0" !0"D "! " !" "  !  6 ! *"%( 0" T-U Δ =    .)+#)Q %   TU 5"7?(      P "  +9 # )++Q  )+ % % !"  , *!Q " [Q " !"  "%"! "%" %  !" 5!"  "! "!2 '  !0" " !%  % !" 0" " ) !!%!( I+ ,)  +9  ).)+'   +9 " 5*)2+Q # "+  ,& )+ + B%"! " %  !" K!"C " " !"' "!"  % " # !A"  %" %!%!%! ! *a%"' ! " !%" % 2.*!  )+ " " !"' %1 !7? +G .  ).)+   ⇒    =      ⇒ ∫     ∫     = ∫            = ∫    ⇒   =   + ∫        D1 +=)  G  ).)+   ⎧ ⎪⎪   =   ⋅    =    ⎨ ⎪   =    ⇒    =   ⎪⎩  ⇒  ∫                =  ∫   ⇒   ⇒    =    + ∫     =  ∫      ⎡      −     ⎤ ⎦  ⎣     =      =  Q    =      1 )7?   *+  ).)+ 2 ,  2 .!! 01 )7?   *+ 1  *+ 2 ,       # # #                   #   =    +    +  +             + # +  + #       = #  = # ∴ # = # + # +  + #   !" % #  "% "%" !" % #'  L1  *+ 2 .!!                     # # #    ⇔ #     =    +    +  +          =   +    +    +    +  +   +    ∫ ∫ #  #  # ∫  ⎛ ⎞ ⇒    = ⎜ + +  + ⋅ +    ⎟ ∫   +   +    +     # # #  ⎠  ⎝          # = + +  + # # # #   !" % "  "% "%" !" % "'    !"Q # = # # ' # + #  %1 )7?  ).)+ 1 .)+ 2 .!!                        =    +    +  +    =        +  +  +  =      =  +  +  +   =    =         =  +  +  +      !" % "  "% "%" " !J % "'   L1 .)+ 2 ,                        ⇔        =    +    +  +    = =                         +    = + + + + +     ∫  ∫  ∫ ⎛ ⎞ ⎟    +    +    +  +    = ⎜⎜ + +  +            ⎟⎠ ∫  ⎝                = + +  + '  !" % #  "% "%"     " !J % #' 1 *!   79( "  !" 0" *   + .0"  %, +  !A %  !%  %% *"% %!%&! +   + .0" " +  !A " " !"' .)+ =     *+ = # ↔  ⎫  ↔ #⎭     0" 6 !?  !J  !"D !" %J R B0"D*?C R  *? %"  &)" # : A  ⎬  *! "! < K" " !J !J  !" 5!" %!J , , K! B."C %"  6.0" " :  I2.!( !%.0"  %  !"   !A"  !5 % E' "" % R %  %, c % R  *?    # '   6        #  1 .+ +*!  *2 ))*+   !" !) "" % 6% %! + " %  =   ".0"   ".0" L' !% .     ≥ M' #   =     ,)  =  = Ω    = Ω  = Ω # = 5 A2 !$& (!! %!"!!%! ! #   ⇔    #    # = = .   +   ⋅ # −  = .  B 2C   " &! $& (!!  # # #   #    ⇔   #   +     =  #   + #   =   #      = −   ⇒ ∫ # = −  ∫  #   # #   # # − ⇒ #   = −   + 9 ⇒    =  # 9 $  ⇒ #   = $ −   # ⋅ 9   #   ".Z ( # +  = $ = $ "%" ,& #  "! "  !"Q # −  = # +  = .  = $ ⇒ #   =  −  .        #   : "  .     " # %  = +   = − (  C !A"  KZ  "! % ! $ MD  % ! $ Mc  ⎡ . − . ⎤⎦ = ⎡⎣ − . ⋅ .− . ⎤⎦ = −  " ⎣ =  =   # +  = # −  =   5C 4!A" "  !" "6" " " ,)%!" # +  # +  −  ⋅ . #   = # ⇒ = # +  = = −  "    +         = + (   = #   ⇒   +   # +  =  =  ⋅  − . ⋅ .− . = −   " =     &!'(L*0,'1 +!(0(1  01 +  1 <"!  !0" B"!C " " A% % !0" B"!C +  ) "% " !%"'    =   $!    =    $  v (t) i( t) 1 c ic lo Ip x 1 V p x 1 0 .8 0 .8 0 .6 0 .6 0 .4 0 .4 0 .2 0 .2 0 0 -0 .2 - 0 .2 -0 .4 - 0 .4 -0 .6 - 0 .6 -0 .8 - 0 .8 -1 -1 0 1 .5 7 0 8 3 .1 4 5 9 4 .7 1 2 4 w t 6 .2 8 3 2 7 .8 5 4 9 .4 2 4 8 ra d 0 1 .5 7 0 8 3 .1 4 1 6 4 .7 1 2 4 6 .2 8 3 2 w t 7 .8 5 4 9 .4 2 4 8 ra d "5'( • •  * .0" " # % * .0" R !" #   ! % !)" 6 ' 4% "  * .0" # % !," +  "%. % % ! %!   !%  %% %! ' !%" &"  " % " # ,%" 2""' •  *+=? # " ;%"  " " 6 " • <+=? 6   • = π →  = = M 5< N " "G' π M !  "N • < .0" "" *"   =   $  + ϕ   ϕ # " J6 "  *  * .0" ""  # 6%! !" % 6 ' G K'(    =   $ +    *"%.0"  "    =   $ + • π    !%  *6% !  * .Z "' [    =    $  + α      =     $  + β  !0"Q    !& !"  α − β % .0" b     K'(    = " −      =   $ +       =   $ −   −    =   $ −       =   $ +   +    =  $! +       !& !  −  −  = −  % .0" b    ' "    !& !  +  % .0" b    ' %1 .+     $  =    + #  $ #  #       R!(  !" !& % 6% %!       $  =    + #   5! % "! % 6% %! " ""  "5!  " .0" !   + .0" * BEC'  " .0" !   + .0" * !%  %% *"% +   *"!  K!.0"Q !0" )%"  " +     =    $  + ϕ  '  5[!)"( !%    ϕ ' $!  ±  = $!   $  ± $!   $   $  ±  =  $   $  ± $! $!     $  =    $  + ϕ  + # −    $!  + ϕ       $  =   M $   $ ϕ − $! $! ϕ N − #  M$!   $ ϕ + $! ϕ  $  N = M     $ϕ − #  $! ϕ N $  + M−   $! ϕ − #    $ϕ N$!  " !*.0"  )&)    $ ϕ − #  $! ϕ =   BC −   $! ϕ − #   $ ϕ =  BC *A"  +' BC c BCQ !%"(   +  #   =   ⇒        =   + #    +'  !%"Q   $! ϕ = − #   $ ϕ ⇒ ϕ = − ! % "!!"Q   = #   +  #  $ − ! %  #  "%" "!! +   "! !& !  ϕ % .0" b !0"' D1 1 *.0"( <" # % ;%" "%K" +  ! % !0" " % "! !Q  [ !  ! % 6A "D" % !$M' "!" *" # 5"  !   (  ± =θ =  $θ ± = $! θ   !*"% *"  % !0" " # *!  6 ! *"%(  =    $  + ϕ  { =  ℜ { = ℜ {  =   ℜ   =   + ϕ    = =ϕ } } }  =  = <"% K" <" !0"  =    =ϕ =   ∠ ϕ =    $ϕ + =  $! ϕ <"% " ⇒*"% *" !*  * .0" " " "%2" " !%"  " "%2"  *+=?' K'(    =   $ +  MPN  = ∠ −  MPN   = ∠  MPN    =   $  −   MPN E1 I)+79 2.!I  )B!C B!C      =    $  + θ   ⇒    =    $  + θ       = =  $!  + θ   ⇒    = =  $!  + θ   @  '&   ! &!$ !% $73    =    +    =   [  $ + θ   + = $! + θ  ] =    =   + θ    ⇒   =    +    =   [  $ + θ   + = $! + θ  ] =    =   + θ      =   + θ      =   + θ   <!"  =   % !"" " !%"Q " %%" " !0"   %" *"  5!"' % "  !" " "%2"  *+=? #(    =θ     =θ  F1 !2+ ."  23  MN=) X'EC  " !"' 4!A" % K!.0" "%K " !"         =    =   + θ   !%" % "! " !"   =    =   + θ   "    ,% =   + θ      =    ⇒       =θ  =    =   + θ   =    =θ  ⇒ " "%2"  *+=?(  =    !" " "%2"  *+=? #   0"  "! % * X'C  "  !"            = # #    =   + θ   = # =     =   + θ    =#   =   + θ    =θ  = =#    =θ   =#  = =# = #∠   "  !"Q  "! ! !  NM° % .0" b !0"' X'C  " !"         =   + θ  =     =      M   =   + θ   N = =   =   + θ       =θ  = =   =θ    = =  =    =  =   ∠ −    =  " !"Q  "! !& !  NM° % .0" b !0"' K%"( !% B!C % 6% %!' #      $  " "%2"  *+=?(  = =#   ∠  + =# =   ∠   +  #  ∠ ! %   ∠    =   ∠   ∠ − ! %  2. #) ; > <   2+#) ; 7 <  %JB >C   A0" ! " *" !0"  " *" "!'   >   BΩC > # % ;%" "%K" % 0" # % *" #  +  #     = >= #   +  #   $ − ! % #   ℜ { > } =  = ""0%! > = > ∠ θ =  + = Ι { > } =  = !?%!  %J  "%  %% *"% +   !?' # >  = > + >  +  + >  " = + +  + >  > >  > , %!J B 7 C   A0" ! " *" "!  " *" !0" % % %!"'  7 = 7   Ω  B  " C  = 7  7= > 7 = 7 ∠ θ @ =  + = " !J  !J %!J  "%  %% *"% +   !J' # = + +  + 7 7 7 7 " 7 = 7 + 7 +  + 7 5).0"( > = ! + = 7 = !− = = =  + = =  ! +  > !+ =   ≠ !  = ≠ ! ! +  =  ! +   P1 -!  ))*+ !2+  . +  1 !% "  !" + )! " "%2"  *+=? "  !" ! "' d'EC & " %" "%!" +  " 2! " ' d'C &  %, % ! " ' d'C *"%.0"  *"! - 2! " ' d'C "%  ,8) " "!" "5'( *"! !! $ *"!  %!    * M'  =  ∠   d'XC  ".0"    Ω   $   +   Ω 5  $!  +     =  !  "  Ω Ω ∠   = Ω  =  ∠    +  =     = .∠ − .     =  !  "  ′ ′  = −  Ω Ω   =  !  "  ″ ″  = Ω −   =  ∠    +   =  = Ω ″  = − .∠ − .   ∠  ′ ″  ≠  +  +   " 0" !0"  %% *+=?'    = .  $  − .   −  − . $!  − .   Q1 G2  0" !.Z " " "%K"  !"" " *"  !0"   "! +  %  %  !"'  %!% ) A  *6% ! " *" !Z  "!' 6  "! .0" " 6%(  • • • • • " !"  "! !& % * "%  !0"' "  !"  "! !& !  NM° % .0"  -' " !"  "! !& !  NM° % .0"  -' K%" E(  #    μ A .5 4 % " % 6% *"  !%   +   "! " !"  *+  !  X° % .0" b "!  *"!   '  =  !  "  = # +  +        ∠   =  = =   ∠ −   # − > # = × . ×   + #   = =   ∠   >    X   =   #    =  ⇒  =    ⇒  = = Ω   ∠   K%" ( "  !" 5K"Q " %2%!"  X ' "!" " *"  "%" *?Q , " 6% *"  !%  '    Ω  6    Ω  = Ω  XM   = =  ×   =  ×  =   =   =     =     =     =  6  θ  6 = .   +   = .    −  = ! % = −     6 =   =  × . = .  =  6 +  "%"! ,"A"!   =  +  6  $θ  =  + .  $− .   =  "%"! )!   =  6 $! θ  = . $!− .   = −   = θ    +  −   = . −  = ! % = − .  9! θ θ e   +   θ  = ! %    OX θ  =  +    =    OX  = .∠ − . M N    &!'(M* (N0 /+!(0(1  01 +=) ++#       =           %1 +=) 2,     = ∫      +     " D1 ! )  )+  +9 #!""  "%  "!? %#   % !" %! " *"%  " *!'     =    $ω  + ϕ   =   AQA $!    =    $ω  + ϕ    =   P!%273  +=)  + !2+  .  =   A ) %!$$ % ! &  %0     =     =    $  ω  + ϕ   !  $   =  +  $      = [ +  $ω  + ϕ ]   =  ⇔   =    =      →   =   " 0"( 4% " "% %!   " 6       %% "!? +  % "! "!!  )"   "5 % !"' #!"" 6#"  !% " )" *A  % 6A  ⎛  ⎞  +   = ⎜  ⎟ =  " = ∫       ⎝ ⎠    " =  +  ∫        5'(  "  " =   Q  " =   01 +=) 2 !2+ ." 'E' " 6 B%J + + C ϕ = θ  − θ  ο    = ο  >= > φ   $ω   °      = = = − φ =  − φ > > > ϕ °    =    $ω  − ϕ    =       =   $ω      $ω  − ϕ  ⎡ ⎤    =    ⎢  $ω  − ω  + ϕ  +  $ω  − ϕ  ⎥ Q"  ⎣ ⎦  $  $  = [  $  −   +  $  +   ]    =     $ϕ  +     $ω  − ϕ       =  "  "  $ϕ  +  "  "  $ω  − ϕ  Q"  $  −   =  $   $  + $  $     =  "  "  $ϕ  +  "  " [  $ω    $ϕ  + $ω  $ϕ  ]   =  "  "  $ϕ  [ +  $ω   ] +  "  " $ϕ $ω     • "!? !!J  "!? !!J  ! !)  > ! !)  > "!? %#( = • ∫    =  "  "  $ϕ  Q T I U  "!? !)( -"  "  "!? !!J  ! !)' B =  "  " $ϕ  ''  !" !)" 0"  "! % *' θ  = θ  ⇒ ϕ = '    =  "  " [ +  $ω   ]  = ∫  "  " [ +  $ω   ]    "   =  "  " =  " = B =  ''  !" K )%!  !)" θ  =  θ  = − ° ⇒ ϕ = °   =  "  " $ω   # =   "  B# =  "  " = 6 #  " = 6#   !" 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C  S =  . ×  = − B π    F1 =) 2-I2  .+=) 5[!)"( "5! > #  %"" +   "!? !)  6 [ %&K%' >  =  + =6   °  > # = # + =6 # \ e'E 6  %! !) → > # > ° # °  # ° °   # = = >  + #  + =6  + #  # =   + #   + 6  ° "!?  6( = #  #  # = #  # =   + #   + 6  # 1 "  # = # =   #  + 6  = >  e' 6 "%  *K"  g )&) >  ° # # °  =6 # \ °  # =   + #  + =  6  + 6 #  ° °  ° # =   + #   +  6  + 6 #   "!?  6(  # = #  #  #  =   + #   +  6  + 6 #   # 1 " 6  = − 6 #  # 1 #  =   + #   > e' 6 "%  )&)  g *K"  #  =6 # \   # = (  # = + # ) + ( 6  + 6 # )  #  (  + # ) + ( 6  + 6 # )   + ( 6  + 6 # )    !0" # =  Y # 1 " # =   # e' 6 "%  )&)  g )&) > # °  =6 # # = (  #   + # ) + ( 6 # + 6  )   <A" 6 # )( # 1  6 # !0"( # S = #  = − 6 '  (  + # )  ' % 6 Q *A" # )( # 1 " !0"( > # R =  − =6  = >  ' # S =  ⇔ # =  '  #   &!'(O*+!( +?,(  01 ? +-) M*!5  • 4% !%  !Z !*& + 5 # % "[ !"   !Z " "% %%  %% %! Q  %% *+=? % * !   EMh' •  !Z 0" ,% !Z  * Q Q ' • +=?  * B*6% !  !Z  *C(  ° % °  ° ° ! ! ° ° %  +=? Q 6!) " ! +=? Q "!) 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Z  * !!J( "!  * !!J(     =   $ω  + θ       =    $ω  + θ       =   $ω  + θ       =    $ω  + θ       =   $ω  + θ      =    $ω  + θ   5" +   $   $  = [  $  +  +  $  − ]  "!? !!J %  *(     =         =  "     "    $ φ              ⎡ ⎛ ⎢ +  "     "    $ ⎢  ⎜ ω  + θ  ⎜    ⎢⎣ ⎜⎝    "!? !!J !"!(   =     +    +    "!? !) !"!(  =  +  +  =  "   "  $ φ  +  "   "  $ φ  +  "  "  $ φ  X'E'  % !% + 5"  " =  " =  " =  " >  = >  = > = > ⇒ φ  = φ  = φ  = φ   " =   " =   " =  " • "!? !!J(    =   "  "  $ ϕ • "!? %#(  =  "  "  $ ϕ →  6 6 % i  !" =  .&!   !" = .&! 7 =  .&!   .&!  $ ϕ ⇒ 7 =  .&!  .&!  $ ϕ →  6 6 % Δ  !" = .&!   !" = .&!  =   = 7  .&!  .&!  $ ϕ ⇒  =  .&! .&!  $ ϕ ⎤ ⎞ ⎟−φ ⎥ ⎥ ⎟⎟  ⎠  ⎥⎦  9!$  P!F!( %!$!2'!$   "! "!? !)  =    $ ϕ  =     $ ϕ =  #  #  $ ϕ "!? !) B =   $ ϕ B =    $ ϕ =  #  # $ ϕ "!? !  =    =   = "!? "%K ° <!"  "!? ° °R ° ° ° R  =    =   A =  $ ϕ A =  $ ϕ X''  % !% + 5" "!? !) !"!(  =  +  +  "!? !) !"!( B = B + B + B "!? ! !"!(  =   + B  <!"  "!?(  $ ϕ = ° °   ° ° "!? 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