高一数学向量题(高手速进啊,快)已知A(2x-1,2x-y-1),B(y-2,x-2y),C(-1,2),D(-3,4),能否选取恰当的实数x,y,使四边形ABCD为梯形,平行四边形?
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![高一数学向量题(高手速进啊,快)已知A(2x-1,2x-y-1),B(y-2,x-2y),C(-1,2),D(-3,4),能否选取恰当的实数x,y,使四边形ABCD为梯形,平行四边形?](/uploads/image/z/5453434-10-4.jpg?t=%E9%AB%98%E4%B8%80%E6%95%B0%E5%AD%A6%E5%90%91%E9%87%8F%E9%A2%98%EF%BC%88%E9%AB%98%E6%89%8B%E9%80%9F%E8%BF%9B%E5%95%8A%2C%E5%BF%AB%EF%BC%89%E5%B7%B2%E7%9F%A5A%EF%BC%882x-1%2C2x-y-1%29%2CB%28y-2%2Cx-2y%29%2CC%28-1%2C2%29%2CD%28-3%2C4%29%2C%E8%83%BD%E5%90%A6%E9%80%89%E5%8F%96%E6%81%B0%E5%BD%93%E7%9A%84%E5%AE%9E%E6%95%B0x%2Cy%2C%E4%BD%BF%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%BA%E6%A2%AF%E5%BD%A2%2C%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2%3F)
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