.定义在R上函数满足F(X)+F(X+1)+F(X+2)=0,X属于R,且F(1)=a,F(2)=b,F(3)=c,求F(2011)

问题描述:

.定义在R上函数满足F(X)+F(X+1)+F(X+2)=0,X属于R,且F(1)=a,F(2)=b,F(3)=c,求F(2011)

F(2)+F(3)+F(4)=0F(4)=-b-cF(3)+F(4)+F(5)=0F(5)=-c+b+c=bF(4)+F(5)+F(6)=0F(6)=b+c-b=cF(7)=-b-cF(8)=b+c-c=bF(2)=b,F(3)=cF(4)=-b-c F(5)=bF(6)=cF(7)=-b-cF(8)=bF(2)=F(5)=F(3n-1)=bF(3)=F(6)=F(3n)=cF...