5

ar谱估计，分别用了最小二乘法和yulewalker法。(ar spectrum estimation, least squares method were used and yulewalker law.)

vumat and umat file of hashin and hard

超级好用的书，面试必备，包括常用的算法介绍，面试题目等等(Super easy to book, interview essential, including the commonly used algorithm is introduced, interview questions, etc.)

使用奇异值分解来帮助求解最小二乘问题，特别是在方程系数矩阵不满秩的情况下。(SGELSD computes the minimum-norm solution to a real linear least * squares problem: * minimize 2-norm(| b- A*x |) * using the singular value decomposition (SVD) of A. A is an M-by-N * matrix which may be rank-deficient.)

分支界限费用矩阵的说明文档，非常实用,建议下载哦(Branch line cost matrix documentation, very practical, it is recommended to download Oh)

ABAQUS纤维增强复合材料损伤失效UMAT(ABAQUS UMAT subroutine for fiber-reinforced composite failure analysis)

数值分析中用C 语言验证验证Gauss列主元消去法。(Numerical analysis using the C language to verify verify the Gauss column principal component elimination.)

若矩阵A中的某一元素A[i，j]是第i行中的最小值，而又是第j列中的最大值，则称A[i，j]为矩阵A中的一个鞍点。请写出一个可确定此鞍点位置的算法（如果这个鞍点存在）。(If the matrix A, an element A [i, j] is the minimum value in the i-th row, but is the maximum value of the j-th column, then A [i, j] for the matrix A is a saddle point. Please write a algorithm to determine the position of saddle point (saddle point exists).)

安德森《计算流体力学及其应用》第九章不可压库埃特流的数值解 9.3节 数值方法：隐式克兰克—尼科尔森方法。(Anderson the computational fluid mechanics and its application "chapter 9 do not YaKu etta flow numerical solution of section 9.3 numerical methods: implicit g frank- Nicholson method. )

插值与拟合，牛顿插值法，直接利用拉格朗日插值多项式的病态性(Interpolation and fitting, Newton interpolation method, the direct use of Lagrange Interpolation polynomial morbid)