高中数学,急求解,新年快乐可加分,设N个实数x1,x2...xn的算术平均数为x拔,设a不等于x拔设N个实数x1,x2...xn的算术平均数为x拔,设a不等于x拔,记p=(x1-x拔)^2+(x2-x拔)^2+.(xn-x拔)^2,q=(x1-a)^2+(x2-a)^2+...(xn-a
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![高中数学,急求解,新年快乐可加分,设N个实数x1,x2...xn的算术平均数为x拔,设a不等于x拔设N个实数x1,x2...xn的算术平均数为x拔,设a不等于x拔,记p=(x1-x拔)^2+(x2-x拔)^2+.(xn-x拔)^2,q=(x1-a)^2+(x2-a)^2+...(xn-a](/uploads/image/z/5530402-10-2.jpg?t=%E9%AB%98%E4%B8%AD%E6%95%B0%E5%AD%A6%2C%E6%80%A5%E6%B1%82%E8%A7%A3%2C%E6%96%B0%E5%B9%B4%E5%BF%AB%E4%B9%90%E5%8F%AF%E5%8A%A0%E5%88%86%2C%E8%AE%BEN%E4%B8%AA%E5%AE%9E%E6%95%B0x1%2Cx2...xn%E7%9A%84%E7%AE%97%E6%9C%AF%E5%B9%B3%E5%9D%87%E6%95%B0%E4%B8%BAx%E6%8B%94%2C%E8%AE%BEa%E4%B8%8D%E7%AD%89%E4%BA%8Ex%E6%8B%94%E8%AE%BEN%E4%B8%AA%E5%AE%9E%E6%95%B0x1%2Cx2...xn%E7%9A%84%E7%AE%97%E6%9C%AF%E5%B9%B3%E5%9D%87%E6%95%B0%E4%B8%BAx%E6%8B%94%2C%E8%AE%BEa%E4%B8%8D%E7%AD%89%E4%BA%8Ex%E6%8B%94%2C%E8%AE%B0p%3D%28x1-x%E6%8B%94%29%5E2%2B%EF%BC%88x2-x%E6%8B%94%29%5E2%2B.%28xn-x%E6%8B%94%29%5E2%2Cq%3D%28x1-a%29%5E2%2B%28x2-a%29%5E2%2B...%28xn-a)
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