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gahivak


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怎样自动排列出元素的组合?且计算出相应的值。
比如 ABCD这四个字母排列组合中考虑顺序因素,取其三种元素就是24种可能性,那么怎么利用MATLAB将这全部罗列出来?第二,ABCD在每个位置都有其特定的数值,比如A在第一位值为1.8,第二位值为0,第三位为0。B在第一位又是多少多少。。。每个字母在每个...

3 years ago | 1 answer | 0

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微分方程组参数拟合。
编一个关于微分方程组拟合的问题,能运行的了,也能出结果,但是得到的三个参数最佳值是错误的,且随着上下限取的不同而不同,能帮忙看看怎么办吗? 这个是我科研立项最后也是最关键一步,但是Matlab用的不熟,希望有大神帮我解决一下问题,真心感谢。 具体的微分...

3 years ago | 0 answers | 0

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