求函数y=(x2-2x+6)/(x+1) (x>-1)的最小值.因为是初中生,所以要用函数图象解,我把它化成y=9/(x+1)+x-3,然后画y=9/(x+1)和y=x-3的图象,所以y=9/(x+1)+x-3的图象的趋近线是x=-1和y=x-3,这么做做
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![求函数y=(x2-2x+6)/(x+1) (x>-1)的最小值.因为是初中生,所以要用函数图象解,我把它化成y=9/(x+1)+x-3,然后画y=9/(x+1)和y=x-3的图象,所以y=9/(x+1)+x-3的图象的趋近线是x=-1和y=x-3,这么做做](/uploads/image/z/10187934-6-4.jpg?t=%E6%B1%82%E5%87%BD%E6%95%B0y%3D%EF%BC%88x2-2x%2B6%EF%BC%89%2F%EF%BC%88x%2B1%EF%BC%89+%EF%BC%88x%EF%BC%9E-1%EF%BC%89%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC.%E5%9B%A0%E4%B8%BA%E6%98%AF%E5%88%9D%E4%B8%AD%E7%94%9F%2C%E6%89%80%E4%BB%A5%E8%A6%81%E7%94%A8%E5%87%BD%E6%95%B0%E5%9B%BE%E8%B1%A1%E8%A7%A3%2C%E6%88%91%E6%8A%8A%E5%AE%83%E5%8C%96%E6%88%90y%3D9%2F%EF%BC%88x%2B1%29%2Bx-3%2C%E7%84%B6%E5%90%8E%E7%94%BBy%3D9%2F%EF%BC%88x%2B1%EF%BC%89%E5%92%8Cy%3Dx-3%E7%9A%84%E5%9B%BE%E8%B1%A1%2C%E6%89%80%E4%BB%A5y%3D9%2F%EF%BC%88x%2B1%29%2Bx-3%E7%9A%84%E5%9B%BE%E8%B1%A1%E7%9A%84%E8%B6%8B%E8%BF%91%E7%BA%BF%E6%98%AFx%3D-1%E5%92%8Cy%3Dx-3%2C%E8%BF%99%E4%B9%88%E5%81%9A%E5%81%9A)
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