三角形abc中,ca=cb=3,ab=4,点E.F在三角形abc的边上,且线段ef将三角形abc分成周长相等的四边形和三角形它们的面积分别记为s1 s2.(1)若以e为ac中心,求ef的长(2)求s1/s2的最小值
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![三角形abc中,ca=cb=3,ab=4,点E.F在三角形abc的边上,且线段ef将三角形abc分成周长相等的四边形和三角形它们的面积分别记为s1 s2.(1)若以e为ac中心,求ef的长(2)求s1/s2的最小值](/uploads/image/z/1132670-38-0.jpg?t=%E4%B8%89%E8%A7%92%E5%BD%A2abc%E4%B8%AD%2Cca%3Dcb%3D3%2Cab%3D4%2C%E7%82%B9E.F%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2abc%E7%9A%84%E8%BE%B9%E4%B8%8A%2C%E4%B8%94%E7%BA%BF%E6%AE%B5ef%E5%B0%86%E4%B8%89%E8%A7%92%E5%BD%A2abc%E5%88%86%E6%88%90%E5%91%A8%E9%95%BF%E7%9B%B8%E7%AD%89%E7%9A%84%E5%9B%9B%E8%BE%B9%E5%BD%A2%E5%92%8C%E4%B8%89%E8%A7%92%E5%BD%A2%E5%AE%83%E4%BB%AC%E7%9A%84%E9%9D%A2%E7%A7%AF%E5%88%86%E5%88%AB%E8%AE%B0%E4%B8%BAs1+s2.%EF%BC%881%EF%BC%89%E8%8B%A5%E4%BB%A5e%E4%B8%BAac%E4%B8%AD%E5%BF%83%2C%E6%B1%82ef%E7%9A%84%E9%95%BF%EF%BC%882%EF%BC%89%E6%B1%82s1%2Fs2%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC)
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