O functie speciala

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Antonache Emanuel
Euclid
Posts: 37
Joined: Sat Feb 28, 2009 4:15 pm
Location: Targoviste, Dambovita

O functie speciala

Post by Antonache Emanuel »

Determinati \( f:\mathbb{R}\rightarrow\mathbb{R} \) de gradul 2 neinjectiva astfel incat restrictia sa la Q (\( f:\mathbb{Q}\rightarrow\mathbb{R} \)) sa fie injectiva.
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Marius Mainea
Gauss
Posts: 1077
Joined: Mon May 26, 2008 2:12 pm
Location: Gaesti (Dambovita)

Post by Marius Mainea »

\( f(x)=ax^2+bx+c \) cu \( \frac{b}{a}\in\mathbb{R}\setminus\mathbb{Q} \)
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