1.复数z=的共轭复数是________.
2.函数f(x)=,则不等式f(x)≥x2的解集是________.
3.已知函数f(x)=的定义域为A,2∉A,则a的取值范围是________.
4.f(n)=cos,则f(1)+f(2)+f(3)+…+f(2 011)=________.
5.若圆x2+y2-2mx+m2-4=0与圆x2+y2+2x-4my+4m2-8=0相切,则实数m的取值集合是________.
6.已知数列{an}的前n项和为Sn,且Sn=n2+n,数列{bn}满足bn=(n∈N*),Tn是数列{bn}的前n项和,则T9=________.