设函数f(x)=x3+3bx2+3cx在两个极值点x1、x2,且x1∈[-1,0],x2∈[1,2].则f(x2)的最大值与最小值之和为是否可以消去3c解?c属于[-1,0]f(x2)属于[-16-2C,-2-3C]结果是-15 不对啊...答案见菁优网第二问b→c a
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![设函数f(x)=x3+3bx2+3cx在两个极值点x1、x2,且x1∈[-1,0],x2∈[1,2].则f(x2)的最大值与最小值之和为是否可以消去3c解?c属于[-1,0]f(x2)属于[-16-2C,-2-3C]结果是-15 不对啊...答案见菁优网第二问b→c a](/uploads/image/z/8652117-21-7.jpg?t=%E8%AE%BE%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%3Dx3%2B3bx2%2B3cx%E5%9C%A8%E4%B8%A4%E4%B8%AA%E6%9E%81%E5%80%BC%E7%82%B9x1%E3%80%81x2%2C%E4%B8%94x1%E2%88%88%5B-1%2C0%5D%2Cx2%E2%88%88%5B1%2C2%5D%EF%BC%8E%E5%88%99f%28x2%29%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC%E4%B8%8E%E6%9C%80%E5%B0%8F%E5%80%BC%E4%B9%8B%E5%92%8C%E4%B8%BA%E6%98%AF%E5%90%A6%E5%8F%AF%E4%BB%A5%E6%B6%88%E5%8E%BB3c%E8%A7%A3%3Fc%E5%B1%9E%E4%BA%8E%5B-1%2C0%5Df%EF%BC%88x2%EF%BC%89%E5%B1%9E%E4%BA%8E%5B-16-2C%2C-2-3C%5D%E7%BB%93%E6%9E%9C%E6%98%AF-15+%E4%B8%8D%E5%AF%B9%E5%95%8A...%E7%AD%94%E6%A1%88%E8%A7%81%E8%8F%81%E4%BC%98%E7%BD%91%E7%AC%AC%E4%BA%8C%E9%97%AEb%E2%86%92c+a)
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