已知二次函数y=f(x)的图像为开口向下的抛物线,且对任意x属于R都有f(1-x)=f(1+x)若向量a=(根号m,-1),b=(根号m,-2),则满足不等式f(向量a点乘向量b)>f(-1)的m的取值范围为______答案
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![已知二次函数y=f(x)的图像为开口向下的抛物线,且对任意x属于R都有f(1-x)=f(1+x)若向量a=(根号m,-1),b=(根号m,-2),则满足不等式f(向量a点乘向量b)>f(-1)的m的取值范围为______答案](/uploads/image/z/7256027-11-7.jpg?t=%E5%B7%B2%E7%9F%A5%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0y%3Df%EF%BC%88x%EF%BC%89%E7%9A%84%E5%9B%BE%E5%83%8F%E4%B8%BA%E5%BC%80%E5%8F%A3%E5%90%91%E4%B8%8B%E7%9A%84%E6%8A%9B%E7%89%A9%E7%BA%BF%2C%E4%B8%94%E5%AF%B9%E4%BB%BB%E6%84%8Fx%E5%B1%9E%E4%BA%8ER%E9%83%BD%E6%9C%89f%EF%BC%881-x%EF%BC%89%3Df%EF%BC%881%2Bx%EF%BC%89%E8%8B%A5%E5%90%91%E9%87%8Fa%3D%EF%BC%88%E6%A0%B9%E5%8F%B7m%2C-1%EF%BC%89%2Cb%3D%EF%BC%88%E6%A0%B9%E5%8F%B7m%2C-2%EF%BC%89%2C%E5%88%99%E6%BB%A1%E8%B6%B3%E4%B8%8D%E7%AD%89%E5%BC%8Ff%EF%BC%88%E5%90%91%E9%87%8Fa%E7%82%B9%E4%B9%98%E5%90%91%E9%87%8Fb%EF%BC%89%3Ef%EF%BC%88-1%EF%BC%89%E7%9A%84m%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E4%B8%BA______%E7%AD%94%E6%A1%88)
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