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Veronika J.
matematika

Toto funkcie ak áno aký je Definičný obor a obor hodnôt

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Miroslav J.
Miroslav J. Contact
Zdravím - a píšem svoj názor do tretice.
1. funkcia môže byť, ako píše p. Veronika (y = 1 / (x + 2) ), D(f) = R - {-2}, ale H(f) = R - {0}:
Tá 2. funkcia: súhlasím s názorom p. Petra: y = 2 - |x|, D(f) = R, ale H(f) = (-∞; 2] ... teda vrátane tej 2.
Zuzana M.
Zuzana M. Contact
Dobrý deň, Veronika.
Obidva obrázky sú grafom funkcie.
Graf na obrázku č. 3 je grafom funkcie f(x)=1/(x+2). Definičný obor je R-{-2 } a obor hodnôt je R.
na obr 4. je graf funkcie f(x)=-x+2. A jej def. obor aj obor hodnôt je množina všetkých reálnych čísel, čiže D(f)=H(f)=R
Peter K.
Peter K. Contact
Tá druhá funkcia je skôr niečo ako f(x) = 2 - |x|. Ostatné platí ako píše Veronika.
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