2010009901

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2010009901
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Určte definičný obor \(\mathrm{D}(f)\) a obor hodnôt \(\mathop{\mathrm{H}}(f)\) funkce \(f(x) = \frac{x-3} {x+1}\).
\begin{align*} \mathrm{D}(f) &= (-\infty ;-1)\cup (-1;\infty ),\\ \mathop{\mathrm{H}}(f) &= (-\infty ;1)\cup (1;\infty ) \end{align*}
\begin{align*} \mathrm{D}(f) &= (-\infty ;1)\cup (1;\infty ),\\ \mathop{\mathrm{H}}(f) &= (-\infty ;-1)\cup (-1;\infty ) \end{align*}
\begin{align*} \mathrm{D}(f) &= (-\infty ;3)\cup (3;\infty ),\\ \mathop{\mathrm{H}}(f) &= (-\infty ;-1)\cup (-1;\infty ) \end{align*}
\begin{align*} \mathrm{D}(f) &= (-\infty ;-3)\cup (-3;\infty ),\\ \mathop{\mathrm{H}}(f) &= (-\infty ;1)\cup (1;\infty ) \end{align*}