Eigenvalue Decomposition (B grade) Functional requirements: a) Enter a symmetric square matrix A, read a text file b) A matrix eigenvalue decomposition, the decomposition results: the U matrix, S diagonal matrix output to a text file c) the smallest eigenvalue corresponding eigenvector output to a text file d) verify the decomposition results are correct. Description: Eigenvalue Decomposition numerical calculations are widely used in civil engineering problems, such as the structure can be used to calculate the natural frequency of vibration periods, structural eigenvalue buckling problems.

ju.cpp

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