`(1+1/x)(1+1/(x+1))(1+1/(x+2))(1+1/(x+3))`=

If x-(1)/(x)=1 , then what is the value of ((1)/(x-1)-(1)/(x+1)+(1)/(x^2 +1)-(1)/(x^2 -1)) ?

The expression (1)/(1+(x)/(1-(x)/(x+2)))-:((1)/(1-x)+(1)/(1+x))/((1)/(1-x)-(1)/(1+x))

The expression (1)/(1+(x)/(1-(x)/(x+2)))div ((1)/(1-x)+(1)/(1+x))/((1)/(1-x)-(1)/(1+x)) (a) (2x)/(x^(2)+2x+2) (b) (2x)/(x^(2)-1) (c) 1 (d) x^(2)-1

Let x_(1) , x_(2) , x_(3) be the solution of tan^(-1) ((2x + 1)/(x +1 )) + tan ^(-1) ((2x - 1)/( x -1 )) = 2 tan ^(-1) ( x + 1) " where x_1 2x_(1) + x_(2) + x_(3)^(2) is equal to

If x_(1)x_(1)x_(3)=4(4+x_(1)+x_(2)+x_(3)) then what is the value of [(1)/(2+x_(1))]+[(1)/(2+x_(2))]+[(1)/(2+x_(3))]?

(1)/(x+1)+(1)/(2(x+1)^(2))+(1)/(3(x+1)^(3))+.... =