Questions tagged [functional-square-root]
The functional-square-root tag has no usage guidance, but it has a tag wiki.
1
question
0
votes
0
answers
154
views
functional square root problem - Solution with "Chain Solution". - 2 example problems: $f(f(x))=x^2-2$, $f(f(x))-x^2+x+3=0$ + 1 more problem
Is there a function / Are there such functions $f: \mathbb{R} \to \mathbb{R}$ which satisfies $f(f(x))=x^2-2$?
My Solution:
\begin{align}
&\text{Let's look for $t_2$ which satisfies } f^2(t_2)=...
- 1,182