计算一给定方阵的最小特征值、最大特征值和按模最小的特征值，计算与给定值最接近的特征值，并计算方阵谱范数的条件数和行列式的值，要求设计算法，编程实现计算任务，给出设计思路和计算结果，并进行分析。-Calculation of the minimum for a given matrix eigenvalue, maximum eigenvalue and minimum eigenvalue by mode to calculate the value of the closest to a given characteristic value, and calculate the matrix spectral norm condition number and determinant of value, requires design of algorithms, programming computing tasks, design ideas and results presented and analyzed.