The structure of Lagrangian’s family formed of first integral and the existence conditions were restudied.The study shows that a Lagrangian’s family can be constructed in many sorts of ways.The new forms of the existence conditions of Lagrangian’s family were given.
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丁光涛. Lagrange函数族及其存在条件的再研究[J].动力学与控制学报,2012,10(2):127~129; Ding Guangtao. Restudy on the family of Lagrangians and its existence conditions[J]. Journal of Dynamics and Control,2012,10(2):127-129.
