User contributions for 2003:EE:AF2A:8300:E8EC:7BC3:7A56:44AA
Results for 2003:EE:AF2A:8300:E8EC:7BC3:7A56:44AA talk block log logs global block log filter log
1 May 2020
- 16:1916:19, 1 May 2020 diff hist +1 Nonlinear system identification Third order expansion of one input (u), one output (y), and three noise contributions (e) should be 82, not as formerly stated 56 terms. Proof: 0th order terms: 1, 1st order terms: 1(u) + 1(y) + 3(e) = 5, 2nd order terms: 1(uu) + 1(uy) + 1 (yy) + 3(ue) + 3(ye) + 9(ee) = 18, 3rd order terms: 1(uuu) + 1(uuy) + 1(uyy) + 1(yyy) + 3(uue) + 3(uye) + 3(yye) + 9(uee) + 9(yee) + 27(eee) = 58. 1 + 5 + 18 + 58 = 82
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