- 试求x2010-x2007+x2005-x4+x+7被x-1除所得的余数( ),其中x > 10。
A. -7
B. -6
C. 3
D. 5
正确答案: B
答案解析:
(X2010-X2007+X2005-X4+X-7)MOD(X-1)
=(X2007(X2+X+1)(X-1) + X4(X2000+X1999+…+1)(X-1)+(X-1)-6)MOD(X-1)
=-6
A. -7
B. -6
C. 3
D. 5
正确答案: B
答案解析:
(X2010-X2007+X2005-X4+X-7)MOD(X-1)
=(X2007(X2+X+1)(X-1) + X4(X2000+X1999+…+1)(X-1)+(X-1)-6)MOD(X-1)
=-6