高一数学题,请大家帮忙解答 谢谢!1.解关于x的不等式(x-a)/(x^2-3x+2)>=02.a属于R+,2a+1/a>=2根号2,当且仅当a=__时取等号3.已知x,y属于R+且xy=2,则2x+y的最小值是
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![高一数学题,请大家帮忙解答 谢谢!1.解关于x的不等式(x-a)/(x^2-3x+2)>=02.a属于R+,2a+1/a>=2根号2,当且仅当a=__时取等号3.已知x,y属于R+且xy=2,则2x+y的最小值是](/uploads/image/z/1170684-36-4.jpg?t=%E9%AB%98%E4%B8%80%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E8%AF%B7%E5%A4%A7%E5%AE%B6%E5%B8%AE%E5%BF%99%E8%A7%A3%E7%AD%94++%E8%B0%A2%E8%B0%A2%211.%E8%A7%A3%E5%85%B3%E4%BA%8Ex%E7%9A%84%E4%B8%8D%E7%AD%89%E5%BC%8F%EF%BC%88x-a%29%2F%28x%5E2-3x%2B2%29%3E%3D02.a%E5%B1%9E%E4%BA%8ER%2B%2C2a%2B1%2Fa%3E%3D2%E6%A0%B9%E5%8F%B72%2C%E5%BD%93%E4%B8%94%E4%BB%85%E5%BD%93a%3D__%E6%97%B6%E5%8F%96%E7%AD%89%E5%8F%B73.%E5%B7%B2%E7%9F%A5x%2Cy%E5%B1%9E%E4%BA%8ER%2B%E4%B8%94xy%3D2%2C%E5%88%992x%2By%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC%E6%98%AF)
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