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TR-MO-R1 2020 Problem 11

    Negatif olmayan a,ba, b ve cc gerçel sayıları a+b+c=1a + b + c = 1 eşitliğini sağlıyorsa,

    11+4a2+11+4b2+11+4c2\frac{1}{1+4a^2} + \frac{1}{1+4b^2} + \frac{1}{1+4c^2}

    ifadesinin alabileceği en küçük değer nedir?

    a) 1 b) 2 c) 32\dfrac{3}{2} d) 52\dfrac{5}{2} e) 43\dfrac{4}{3}

    Official text Turkish Mathematical Olympiad, first round 2020 official paper, page 6. Quoted with source.

    A model read this text from the scan of the paper by OCR, with vision/claude@2.1.318 (claude-opus-5-5). No person has checked it against the paper yet.

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