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时间:2017-08-11 数学毕业论文 我要投稿

摘  要


关键词:非线性规划; 3角函数; 逼近法


The optimal model for crossing issue was established. At the beginning, exact results are presented on the first two questions given in the article. I also analyze the main reason for the percentages different of people who can succeed in reaching the opposite bank in 1934 and in 2002 and gives the necessary requirements for those who can reach the destination successfully. In 2002 the minimal speed of those successful competitors was 1. 43m/s. In the process of analyzing the latter problems, the idea that adjusting the competitors flat - out direction as current changes is brought forward to establish Model Ⅱ and Model Ⅲ. Model Ⅱ provides an ideal crossing way in the case that one can adjust his flat - out direction at any time as current changes and gives a relatively rational distribution function of water speed. By analyzing water speed on the foundation of the real condition , we get a more rational distribution function of water speed and build Model Ⅲ . The LINGO and MATHE-MATICA software are .

Key words: Nonlinear programming; trigonometric function; approximation method

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