Question 775941
{{{ g(x) = x / sqrt( 1 - x^2 ) }}}
{{{ g^2 = x^2 / ( 1 - x^2 ) }}}
{{{ x = 2/3 }}}
{{{ g^2 = ( 4/9 ) / ( 1 - 4/9 ) }}}
{{{ g^2 = ( 4/9 ) / ( 5/9 ) }}}
{{{ g^2 = 4/5 }}}
{{{ g(2/3) = sqrt( 4/5 ) }}}
{{{ g(2/3) = sqrt( .8 ) }}}
{{{ g(2/3) = .8944 }}}