已知正数a,b,c满足:5c-3a<=b<=4c-a,clnb>=a+clnc,则b/a的取值范围是?(2012江苏理数14题)
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![已知正数a,b,c满足:5c-3a<=b<=4c-a,clnb>=a+clnc,则b/a的取值范围是?(2012江苏理数14题)](/uploads/image/z/4035634-34-4.jpg?t=%E5%B7%B2%E7%9F%A5%E6%AD%A3%E6%95%B0a%2Cb%2Cc%E6%BB%A1%E8%B6%B3%EF%BC%9A5c%EF%BC%8D3a%EF%BC%9C%3Db%EF%BC%9C%3D4c-a%2Cclnb%EF%BC%9E%3Da%2Bclnc%2C%E5%88%99b%2Fa%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AF%3F%EF%BC%882012%E6%B1%9F%E8%8B%8F%E7%90%86%E6%95%B014%E9%A2%98%EF%BC%89)
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