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SABC=SABO+SACOAO=根號下3,三角形ABO和三角形ACO,底相同,高相等當三角形ABO面積最大時,ABC面積最大三角形ABO底邊AO=根號下3,高為B點縱坐標的絕對值當B點縱坐標的絕對值最大時,三角形ABO面積最大所以當點B落在短... 根號3,過程怎麼說給你?留個Q啥的?
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