Vy\v set\v rete pr\accent23ub\v eh  funkc\' \i :
$$f_1(x) = x + 2 + \frac{3}{\vert 1 + x \vert}, f_2(x) = \frac{\vert 1 + 
2x \vert}{\sqrt{ 1 -2x + x^2}}$$ 

$\mbox{pro} \quad x\neq 1,\quad f_2(1) = 2.$
