题目内容
| 设函数f(x)=(x2-10x+c1)( x2-10x+c2)( x2-10x+c3)( x2-10x+c4)( x2-10x+c5),设集合M={x|f(x)=0}={x1, x2,x3,…,x9} N*,设c1≥c2≥c3≥c4≥c5,则c1-c5为 |
A.20 B.18 C.16 D.14 |
试题答案
C
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N*,设c1≥c2≥c3≥c4≥c5,则c1-c5为