更改

===μ = 4===

===<math>μ = 4</math>===

<math>\mu</math> = 4的特殊之处与<math>\mu</math>= 2相同，其可以获得精确的解，<ref name="Schröder" /> 虽然，一般情况只能通过统计来预测。<ref>{{cite journal | last1 = Little | first1 = M. | last2 = Heesch | first2 = D. | year = 2004 | title = Chaotic root-finding for a small class of polynomials | url = http://www.maxlittle.net/publications/GDEA41040.pdf | format = PDF | journal = Journal of Difference Equations and Applications | volume = 10 | issue = 11| pages = 949–953 | doi = 10.1080/10236190412331285351 | arxiv = nlin/0407042 }}</ref>   

<math>\mu</math> = 4的特殊之处与<math>\mu</math>= 2相同，其可以获得精确的解，<ref name="Schröder" /> 虽然，一般情况只能通过统计来预测。<ref>{{cite journal | last1 = Little | first1 = M. | last2 = Heesch | first2 = D. | year = 2004 | title = Chaotic root-finding for a small class of polynomials | url = http://www.maxlittle.net/publications/GDEA41040.pdf | format = PDF | journal = Journal of Difference Equations and Applications | volume = 10 | issue = 11| pages = 949–953 | doi = 10.1080/10236190412331285351 | arxiv = nlin/0407042 }}</ref>