Difference between revisions of "2024 USAJMO Problems/Problem 5"

m (Problem)
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== Problem ==
 
== Problem ==
 
Find all functions <math>f:\mathbb{R}\rightarrow\mathbb{R}</math> that satisfy
 
Find all functions <math>f:\mathbb{R}\rightarrow\mathbb{R}</math> that satisfy
\[
+
<cmath>f(x^2-y)+2yf(x)=f(f(x))+f(y)</cmath>
f(x^2-y)+2yf(x)=f(f(x))+f(y)
 
\]
 
 
for all <math>x,y\in\mathbb{R}</math>.
 
for all <math>x,y\in\mathbb{R}</math>.
  

Revision as of 12:38, 23 March 2024

Problem

Find all functions $f:\mathbb{R}\rightarrow\mathbb{R}$ that satisfy \[f(x^2-y)+2yf(x)=f(f(x))+f(y)\] for all $x,y\in\mathbb{R}$.

Solution 1

See Also

2024 USAJMO (ProblemsResources)
Preceded by
Problem 4
Followed by
Problem 6
1 2 3 4 5 6
All USAJMO Problems and Solutions

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