已知圆的方程为x2＋y2－6x－8y＝0，设该圆中过点(3,5)的最长弦和最短弦分别为AC和BD，则四边形ABCD的面积是________．
等差数列{an}中,a5+a13=46,则a8+a9+a10=_____________.
已知函数f(x)=lg(x+1)(x>0),则f(x)的反函数为________.
已知集合A={x,xy,lg(xy)},B={0,|x|,y},并且A=B，那么（x+）+(x2+)+(x3+)+…+(x2 010+)的值等于_________________.
(log23+log49+log827+…+3n)×log9=________________.
=_________________.
）+(x2+
)+(x3+
)+…+(x2 010+
)的值等于_________________.
3n)×log9
=________________.
=_________________.）+(x2+)+(x3+)+…+(x2 010+)的值等于_________________.
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