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May 1, 2017 at 23:08 vote accept SKM
May 1, 2017 at 14:45 comment added David Your system is represented by a quadratic polynomial - thus having 2 roots, so it's a 2nd order system.
May 1, 2017 at 13:51 comment added SKM Thank you for your reply. The structure of X starts from the third element and there are 3 coefficients. So, is this an MA model of order 3 or order 2? Can you please let me know?
May 1, 2017 at 12:14 history answered David CC BY-SA 3.0