已知y=log(1/2) [a^2x+2(ab)^x-b^2x+1] (a.b∈R+),求使y为负值的x的取值范围已知y=log1/2[a^2x+2(ab)^x-b^2x+1] (a.b∈R+),求使y为负值的x的取值范围.
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![已知y=log(1/2) [a^2x+2(ab)^x-b^2x+1] (a.b∈R+),求使y为负值的x的取值范围已知y=log1/2[a^2x+2(ab)^x-b^2x+1] (a.b∈R+),求使y为负值的x的取值范围.](/uploads/image/z/8627008-40-8.jpg?t=%E5%B7%B2%E7%9F%A5y%3Dlog%281%2F2%29+%5Ba%5E2x%2B2%28ab%29%5Ex-b%5E2x%2B1%5D+%28a.b%E2%88%88R%2B%29%2C%E6%B1%82%E4%BD%BFy%E4%B8%BA%E8%B4%9F%E5%80%BC%E7%9A%84x%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E5%B7%B2%E7%9F%A5y%3Dlog1%2F2%5Ba%5E2x%2B2%28ab%29%5Ex-b%5E2x%2B1%5D+%28a.b%E2%88%88R%2B%29%2C%E6%B1%82%E4%BD%BFy%E4%B8%BA%E8%B4%9F%E5%80%BC%E7%9A%84x%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4.)
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