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定义在R上的函数f(x)满足f(x+6)=f(x),当-3≤x<-1时,f(x)...
定义在R上的函数f(x)满足f(x+6)=f(x),当-3≤x<-1时,f(x)=-(x+2)2,当-1≤x<3时,f(x)=x.则f(1)+f(2)+f(3)+…+f(2012)=( )
A.335
B.338
C.1678
D.2012
考点分析:
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下列命题中:
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