若a.b.c均为实数,且a=x*x-2y+派/2,b=y*y-2z+派/3,c=z*z-2x+派/6.求证,a.b.c中至少有一个...若a.b.c均为实数,且a=x*x-2y+派/2,b=y*y-2z+派/3,c=z*z-2x+派/6.求证,a.b.c中至少有一个大于0.
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![若a.b.c均为实数,且a=x*x-2y+派/2,b=y*y-2z+派/3,c=z*z-2x+派/6.求证,a.b.c中至少有一个...若a.b.c均为实数,且a=x*x-2y+派/2,b=y*y-2z+派/3,c=z*z-2x+派/6.求证,a.b.c中至少有一个大于0.](/uploads/image/z/3000043-19-3.jpg?t=%E8%8B%A5a.b.c%E5%9D%87%E4%B8%BA%E5%AE%9E%E6%95%B0%2C%E4%B8%94a%EF%BC%9Dx%2Ax%EF%BC%8D2y%EF%BC%8B%E6%B4%BE%2F2%2Cb%EF%BC%9Dy%2Ay%EF%BC%8D2z%EF%BC%8B%E6%B4%BE%2F3%2Cc%EF%BC%9Dz%2Az%EF%BC%8D2x%EF%BC%8B%E6%B4%BE%2F6.%E6%B1%82%E8%AF%81%2Ca.b.c%E4%B8%AD%E8%87%B3%E5%B0%91%E6%9C%89%E4%B8%80%E4%B8%AA...%E8%8B%A5a.b.c%E5%9D%87%E4%B8%BA%E5%AE%9E%E6%95%B0%2C%E4%B8%94a%EF%BC%9Dx%2Ax%EF%BC%8D2y%EF%BC%8B%E6%B4%BE%2F2%2Cb%EF%BC%9Dy%2Ay%EF%BC%8D2z%EF%BC%8B%E6%B4%BE%2F3%2Cc%EF%BC%9Dz%2Az%EF%BC%8D2x%EF%BC%8B%E6%B4%BE%2F6.%E6%B1%82%E8%AF%81%2Ca.b.c%E4%B8%AD%E8%87%B3%E5%B0%91%E6%9C%89%E4%B8%80%E4%B8%AA%E5%A4%A7%E4%BA%8E0.)
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