How can I treat "Matrix is close to singular" when I use function "eigs" to solve eigenvalue problem

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Nguyen Huudat
Nguyen Huudat 2016-11-17
编辑： Nguyen Huudat 2016-11-17
Dear all members, When I use function "eigs", a warning message is as below:
Warning: Matrix is close to singular or badly scaled. Results may be inaccurate. RCOND = 2.638109e-17. > In eigs>AminusSigmaBsolve at 1222 In eigs>@(v)AminusSigmaBsolve(Bmtimes(v)) at 150 In eigs at 265
Hope you can help me treat it. Thank you so much!

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