`(a+2)(a-1)`

the value of sqrt(1(1)/(2)-[1(1)/(2)-1(1)/(2)+(1(1)/(2)-1(1)/(2)-1(1)/(4))]) is

(-(2^(5)+1)^(2),2^(10)-1,(1)/(2^(5)-1)),(2^(10)-1,-(2^(5)-1)^(2),(1)/(2^(5)+1)),((1)/(2^(5)-1),((1)/(2^(5)+1),-(1)/((2^(10)-1)^(2))))

The expression (2^(2)+1)/(2^(2)-1)+(3^(2)+1)/(3^(2)-1)+(4^(2)+1)/(4^(2)-1)+((2011)^(2)+1)/((2011)^(2)-1) lies in the interval

A=[(1,2),(2,1)], then adjoint of A is equal to (A) [(1,-2),(-2,1)] (B) [(2,1),(2,1)] (C) [(1,-2),(-2,1)] (D) [(-1,2),(2,-1)]