求满足条件n的的个数使分式(70n+200)/(n^2+1)为整
2013-09-27 20:08:559***
使分式(70n+200)/(n^2+1)为整数的n有几个?要过程。求满足条件n的的个数使分式(70n+200)/(n^2+1)为整数的n有几个?要过程。:∵(n^2+1)|10(7n+20),
∴(n^2+1)|[10×7^2?
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2013-09-27 21:19:03
2013-09-27 20:54:09
很赞哦! (220)