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∵O是△ABC的外心,∴線段OA=OB=OC,以OB和OC為鄰接邊作菱形OBFC,連接OF,則OF⊥BC,且向量OF=向量OB+向量OC;∵已知向量OE=向量OA+向量OB+向量OC,∴向量OE=向量OA+向量OF,而在△OAE中,向量OE=向量OA+向量AE,∴向量AE=向…
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