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Let x1,x2,…,xn be the solutions of tan−1(2x+1x+1)+tan−1(2x−1x−1)=2tan−1(x+1). Then the value of 4(x21+x22+⋯+x2n) is |
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Answer» Let x1,x2,…,xn be the solutions of tan−1(2x+1x+1)+tan−1(2x−1x−1)=2tan−1(x+1). Then the value of 4(x21+x22+⋯+x2n) is |
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