a) $f(x)=\displaystyle\frac{x^2+1}{x}$ b) $f(x)=\displaystyle\frac{1-x^2}{x}$
c) $f(x)=\displaystyle\frac{x^2-x}{x+1}$ č) $f(x)=\displaystyle\frac{x^3-x^2-2x}{x^2-2x+1}$
d) $f(x)=\displaystyle\frac{x^3-4x}{x^2-1}$ e) $f(x)=\displaystyle\frac{x^3-x^2+x-1}{4+2x-2x^2}$
a) $f(x)=\displaystyle\frac{x^3+1}{x}$ b) $f(x)=\displaystyle\frac{x^4+1}{2x^2-2}$
c) $f(x)=\displaystyle\frac{x^4-1}{2x^2}$ č) $f(x)=\displaystyle\frac{x^4}{3x+3}$