快的话有分函数f(x)=2的-x次方,(x<1)或1/2(x≥1)若0<f(y)<1,则y的取值范围是A.[1,+∞)B.(1,+∞)C.(-∞,1]D.(0,+∞)方程的2-x的次方+x^=3实数解的个数为____________函数y=a的x次方(a>0,且a≠1)在[0,1
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![快的话有分函数f(x)=2的-x次方,(x<1)或1/2(x≥1)若0<f(y)<1,则y的取值范围是A.[1,+∞)B.(1,+∞)C.(-∞,1]D.(0,+∞)方程的2-x的次方+x^=3实数解的个数为____________函数y=a的x次方(a>0,且a≠1)在[0,1](/uploads/image/z/12712429-37-9.jpg?t=%E5%BF%AB%E7%9A%84%E8%AF%9D%E6%9C%89%E5%88%86%E5%87%BD%E6%95%B0f%28x%29%3D2%E7%9A%84-x%E6%AC%A1%E6%96%B9%2C%EF%BC%88x%EF%BC%9C1%EF%BC%89%E6%88%961%2F2%28x%E2%89%A51%29%E8%8B%A50%EF%BC%9Cf%EF%BC%88y%EF%BC%89%EF%BC%9C1%2C%E5%88%99y%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AFA.%5B1%2C%2B%E2%88%9E%29B.%281%2C%2B%E2%88%9E%29C.%28-%E2%88%9E%2C1%5DD.%280%2C%2B%E2%88%9E%29%E6%96%B9%E7%A8%8B%E7%9A%842-x%E7%9A%84%E6%AC%A1%E6%96%B9%2Bx%5E%3D3%E5%AE%9E%E6%95%B0%E8%A7%A3%E7%9A%84%E4%B8%AA%E6%95%B0%E4%B8%BA____________%E5%87%BD%E6%95%B0y%3Da%E7%9A%84x%E6%AC%A1%E6%96%B9%EF%BC%88a%EF%BC%9E0%2C%E4%B8%94a%E2%89%A01%EF%BC%89%E5%9C%A8%5B0%2C1)
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