证明:对任意正整数n,有an + an+1 + … + an+k-1 = an+1 + an+2 + … + an+k, 所以对任意正整数n,an = an+k,如果这个数列有n+k项的话.练习1、下面一列整数中(每个字母或括号都代表一个整数),任意相临
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![证明:对任意正整数n,有an + an+1 + … + an+k-1 = an+1 + an+2 + … + an+k, 所以对任意正整数n,an = an+k,如果这个数列有n+k项的话.练习1、下面一列整数中(每个字母或括号都代表一个整数),任意相临](/uploads/image/z/14437937-65-7.jpg?t=%E8%AF%81%E6%98%8E%EF%BC%9A%E5%AF%B9%E4%BB%BB%E6%84%8F%E6%AD%A3%E6%95%B4%E6%95%B0n%2C%E6%9C%89an+%2B+an%2B1+%2B+%E2%80%A6+%2B+an%2Bk-1+%3D+an%2B1+%2B+an%2B2+%2B+%E2%80%A6+%2B+an%2Bk%2C%E3%80%80%E6%89%80%E4%BB%A5%E5%AF%B9%E4%BB%BB%E6%84%8F%E6%AD%A3%E6%95%B4%E6%95%B0n%2Can+%3D+an%2Bk%2C%E5%A6%82%E6%9E%9C%E8%BF%99%E4%B8%AA%E6%95%B0%E5%88%97%E6%9C%89n%2Bk%E9%A1%B9%E7%9A%84%E8%AF%9D.%E7%BB%83%E4%B9%A01%E3%80%81%E4%B8%8B%E9%9D%A2%E4%B8%80%E5%88%97%E6%95%B4%E6%95%B0%E4%B8%AD%EF%BC%88%E6%AF%8F%E4%B8%AA%E5%AD%97%E6%AF%8D%E6%88%96%E6%8B%AC%E5%8F%B7%E9%83%BD%E4%BB%A3%E8%A1%A8%E4%B8%80%E4%B8%AA%E6%95%B4%E6%95%B0%EF%BC%89%2C%E4%BB%BB%E6%84%8F%E7%9B%B8%E4%B8%B4)
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