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by certus
Sun Nov 02, 2008 3:36 pm
Forum: Analiza matematica
Topic: Inegalitate cu o functie de clasa C^1 care se anuleaza
Replies: 1
Views: 682

Fie \( a \) punctul in care \( f(a)=0 \).

Atunci se obtine:

\( \int_{0}^{1}f^{2}\leq \frac{a^2}{2}\int_{0}^{a} (D(f))^2 + \frac{(1-a)^2}{2}\int_{a}^{1}(D(f))^2 \),

unde \( D(f) \) este derivata lui \( f \).

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