Question 21
Let $f(x)=(x+1)^2$. Find the sum of all values of x satisfying $fff(x)=x$.
Domain clarification: fff means the threefold composition f(f(f(x))). For this self-study question, take all complex roots of the resulting polynomial equation, counted with multiplicity. The source does not specify the domain.
Domain clarification: fff means the threefold composition f(f(f(x))). For this self-study question, take all complex roots of the resulting polynomial equation, counted with multiplicity. The source does not specify the domain.