Urči definiční obor funkce:
\( f: y=\log _{\frac{1}{2}}\left(x+\frac{1}{4}\right) \)
\( D(f)=\left(-\frac{1}{4} ; \infty\right) \)
\( D(f)=\left(0 ; \infty\right) \)
\( D(f)=\left(-\frac{1}{4} ; 0\right) \)
\( D(f)=\left(-\frac{1}{2} ; \infty\right) \)