如图,△ABC中,∠BAC=90°,AB=AC=1,点D是BC上一个动点(不与B、C重合),在AC上取E点,使∠ADE=45°(1)求证:△ABD∽△DCE:(2)设BD=x,AE=y,求y与x的函数关系式.
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![如图,△ABC中,∠BAC=90°,AB=AC=1,点D是BC上一个动点(不与B、C重合),在AC上取E点,使∠ADE=45°(1)求证:△ABD∽△DCE:(2)设BD=x,AE=y,求y与x的函数关系式.](/uploads/image/z/5924170-10-0.jpg?t=%E5%A6%82%E5%9B%BE%2C%E2%96%B3ABC%E4%B8%AD%2C%E2%88%A0BAC%3D90%C2%B0%2CAB%3DAC%3D1%2C%E7%82%B9D%E6%98%AFBC%E4%B8%8A%E4%B8%80%E4%B8%AA%E5%8A%A8%E7%82%B9%EF%BC%88%E4%B8%8D%E4%B8%8EB%E3%80%81C%E9%87%8D%E5%90%88%EF%BC%89%2C%E5%9C%A8AC%E4%B8%8A%E5%8F%96E%E7%82%B9%2C%E4%BD%BF%E2%88%A0ADE%3D45%C2%B0%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%81%EF%BC%9A%E2%96%B3ABD%E2%88%BD%E2%96%B3DCE%EF%BC%9A%EF%BC%882%EF%BC%89%E8%AE%BEBD%3Dx%2CAE%3Dy%2C%E6%B1%82y%E4%B8%8Ex%E7%9A%84%E5%87%BD%E6%95%B0%E5%85%B3%E7%B3%BB%E5%BC%8F.)
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