已知命题P:指数函数f(x)=(2x-6)^x在R上单调递减,命题Q:关于x的方程x^2-3ax+2a^2+1的两根均大于3若P或Q为真,P且Q为假,求实数a的取值范围打错了,指数函数为f(x)=(2x-6)^a
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![已知命题P:指数函数f(x)=(2x-6)^x在R上单调递减,命题Q:关于x的方程x^2-3ax+2a^2+1的两根均大于3若P或Q为真,P且Q为假,求实数a的取值范围打错了,指数函数为f(x)=(2x-6)^a](/uploads/image/z/4485466-10-6.jpg?t=%E5%B7%B2%E7%9F%A5%E5%91%BD%E9%A2%98P%3A%E6%8C%87%E6%95%B0%E5%87%BD%E6%95%B0f%28x%29%3D%282x-6%29%5Ex%E5%9C%A8R%E4%B8%8A%E5%8D%95%E8%B0%83%E9%80%92%E5%87%8F%2C%E5%91%BD%E9%A2%98Q%EF%BC%9A%E5%85%B3%E4%BA%8Ex%E7%9A%84%E6%96%B9%E7%A8%8Bx%5E2-3ax%2B2a%5E2%2B1%E7%9A%84%E4%B8%A4%E6%A0%B9%E5%9D%87%E5%A4%A7%E4%BA%8E3%E8%8B%A5P%E6%88%96Q%E4%B8%BA%E7%9C%9F%2CP%E4%B8%94Q%E4%B8%BA%E5%81%87%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%89%93%E9%94%99%E4%BA%86%2C%E6%8C%87%E6%95%B0%E5%87%BD%E6%95%B0%E4%B8%BAf%28x%29%3D%282x-6%29%5Ea)
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