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在上海市第二届数学竞赛的试题中有一非常有趣的方程求解问题:试求方程的正根,并证明只有一个正根。这使人联想起诸如等方程。这些方程非常整齐,都能化为
There is a very interesting equation solving problem in the second Shanghai Mathematical Contest questions: Try to find the positive root of the equation and prove that there is only one positive root. This is reminiscent of such equations. These equations are very neat and can be turned into