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If ∑10r=1tan−1[39r2+3r−1]=cot−1[mn] (where m and n are coprime), then find the value of (m - n). ___ |
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Answer» If ∑10r=1tan−1[39r2+3r−1]=cot−1[mn] (where m and n are coprime), then find the value of (m - n). |
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