Векторы
a) b-a =AD-AB =BD
b) a +1/2 b =AB+BP =AP
c) 1/2 b -1/2 a =1/2 BD =PT
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Векторы
a) b-a =AD-AB =BD
b) a +1/2 b =AB+BP =AP
c) 1/2 b -1/2 a =1/2 BD =PT