初二数学题,很急啊!超级急!小明和小华站在对角线a、c两点处,小明以1m/S的速度向D处走,途中位置记为P,小华以1m/S的速度走向B点处,途中位置记为Q,假设两人同时出发,已知正方形的边长为7m,AE=
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![初二数学题,很急啊!超级急!小明和小华站在对角线a、c两点处,小明以1m/S的速度向D处走,途中位置记为P,小华以1m/S的速度走向B点处,途中位置记为Q,假设两人同时出发,已知正方形的边长为7m,AE=](/uploads/image/z/4094847-63-7.jpg?t=%E5%88%9D%E4%BA%8C%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E5%BE%88%E6%80%A5%E5%95%8A%21%E8%B6%85%E7%BA%A7%E6%80%A5%21%E5%B0%8F%E6%98%8E%E5%92%8C%E5%B0%8F%E5%8D%8E%E7%AB%99%E5%9C%A8%E5%AF%B9%E8%A7%92%E7%BA%BFa%E3%80%81c%E4%B8%A4%E7%82%B9%E5%A4%84%2C%E5%B0%8F%E6%98%8E%E4%BB%A51m%2FS%E7%9A%84%E9%80%9F%E5%BA%A6%E5%90%91D%E5%A4%84%E8%B5%B0%2C%E9%80%94%E4%B8%AD%E4%BD%8D%E7%BD%AE%E8%AE%B0%E4%B8%BAP%2C%E5%B0%8F%E5%8D%8E%E4%BB%A51m%2FS%E7%9A%84%E9%80%9F%E5%BA%A6%E8%B5%B0%E5%90%91B%E7%82%B9%E5%A4%84%2C%E9%80%94%E4%B8%AD%E4%BD%8D%E7%BD%AE%E8%AE%B0%E4%B8%BAQ%2C%E5%81%87%E8%AE%BE%E4%B8%A4%E4%BA%BA%E5%90%8C%E6%97%B6%E5%87%BA%E5%8F%91%2C%E5%B7%B2%E7%9F%A5%E6%AD%A3%E6%96%B9%E5%BD%A2%E7%9A%84%E8%BE%B9%E9%95%BF%E4%B8%BA7m%2CAE%EF%BC%9D)
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