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smileyRadu
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Inegalitate

Post by smileyRadu »

Fie a,b,c,d numere reale strict pozitive cu \( abcd=1 \), avand proprietatea \( a\leq1\leq b\leq c\leq d \). Sa se arate ca \( (a+1)(d+1)>3 \).

Gh. Szollosy
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maxim bogdan
Thales
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Post by maxim bogdan »

Vezi aici. In loc de \( 3 \) poate fi pus \( 3+\frac{3}{4d^3}. \)
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