北航数值分析第二次大作业 牛顿法解非线性方程组、分片二次插值-Northern Numerical Analysis second job Newton method for solving nonlinear equations, piecewise quadratic interpolation

使用带双步位移的QR分解法求一个10*10矩阵的特征值(Using the QR decomposition method with two step displacement to obtain the eigenvalues of a 10*10 matrix)

本文采用带双步位移的QR方法，通过该方法可以求出矩阵A的全部特征值。(In this paper, the QR method with two step displacements is used, and all eigenvalues of matrix A can be obtained by this method.)