Page 235 - Милогия 2001-full

e ix × ( e- ix ) = - e 2 ix

e × e = ( e- ix ) ( e× - ix ) e= 2ix
ix
ix

e ¶ 2ix = 2ix
x ¶ 2ie

e 2ix

e × e - ix = ( e- ix ) ( e× - - ix ) 1=
ix