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B在x軸上,令B點座標(b,0)A點座標為(3,4)|OA| =√(3²;+4²;)= 5△ABO為等腰三角形.有三種情况:(一)OA=OB此時,|b|=5,b=-5,或5B1(-5,0),B2(5,0)(二)AO=BO此時,b=2xA=2*3=6B3(6,0)(三)BO=…
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