$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$

$\frac{-1}{\sqrt{1+x^2}}$

$\frac{1}{1+x^2}$

$\frac{{\displaystyle 1}}{{\displaystyle \sqrt{1+x^2}}}$

$\frac{1}{\sqrt{x^2}{\displaystyle -}{\displaystyle 1}}$