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Functional differential equation.

1 Name: Anonymous 2021-04-17 07:17
Let's see who is actually smart on /prog/, find a general solution to this functional differential equation.

https://i.imgur.com/SRkD58H.png

f ''(x) = f(f(x)) and there are general solutions

In other words find a function whose 2nd derivative is equal to the same function evaluated at all the points that make that function up.

For example f(f(x)) = ? when f(x) = x^2
is for x=2 ----> f(f(4)) ----> f(4) = 16 ----> f(16) = 256 and this has to be equal to its 2nd derivative
2 Name: Anonymous 2021-04-17 08:38
>>1
do my hw
Go fuck yourself
3 Name: Anonymous 2021-04-17 10:02
Do your own fucking homework, nigglet
4 Name: Anonymous 2021-04-17 10:52
>>1
You want to find a general solution to recursion?

Here ya go: https://www.youtube.com/watch?v=z_HWtzUHm6s
5 Name: Anonymous 2021-04-17 12:23
>>1
i taking a college class, therefore i am smart
it's pretty easy to tell you have an inferiority complex
6 Name: Anonymous 2021-04-17 13:39
off the top of my head i would assume terminal velocity, but I will try my hand at the math I am assuming it might be x^e-1 my method will be a buck shot approach, brute force
7 Name: Anonymous 2021-04-17 14:46
>>1
f(X)=0

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