Question

( frac{1}{x^{2}-1} leq frac{2 x}{x+1} )
( Rightarrow frac{1}{x^{2}-1}-frac{2 x}{x+1} leq 0 )
( frac{21}{(x+1)}left[frac{1}{x-1}-2 xright] leq 0 )
( Rightarrow frac{1}{(x+1)}left(frac{1-2(x-1) x}{x-1}right) leq 0 )
( Rightarrow frac{1}{(x+2)}left|frac{1-2 x^{2}+2 x}{(x-1)}right| leq 0 )
( frac{left(2 x^{2}+-2 x-1right)}{(x+1)(x-1)} geq 0 )
( Rightarrow quad frac{left(x+left(frac{1+sqrt{3}}{2}right)right]}{(1+1)(n-1) !}left[x-left(frac{1-sqrt{3}}{2}right)right] quad leq 0 )

# Complete set of values of r satisfying - 2.2 1 1

Solution