- #1
ggeo1
- 63
- 0
Hello , i wanted to ask sth
I have a map : xn+1=rxne-xn , r>0 and r<20
I want to find fixed points .My problem is that i don't have a value or r.I can't manipulate the r values.
(if i had an r value i would do : r=2;)
My code is:
y[x_]:= r x Exp[-x];
To find the fixed points :
fp= Solve[y[x]-x==0 , x]
My output is:
Solve::ifun: Inverse functions are being used by Solve, so some solutions may not be found; use Reduce for complete solution information. >>
{{x -> 0}, {x -> Log[r]}}
The problem is that the answer is with values of r.
Any ideas?
I have a map : xn+1=rxne-xn , r>0 and r<20
I want to find fixed points .My problem is that i don't have a value or r.I can't manipulate the r values.
(if i had an r value i would do : r=2;)
My code is:
y[x_]:= r x Exp[-x];
To find the fixed points :
fp= Solve[y[x]-x==0 , x]
My output is:
Solve::ifun: Inverse functions are being used by Solve, so some solutions may not be found; use Reduce for complete solution information. >>
{{x -> 0}, {x -> Log[r]}}
The problem is that the answer is with values of r.
Any ideas?