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Editorial
The linear solution of the given function is $f(x) = x + 1$.
Tilted Line
A function is defined as follows:
$$ f(m+n)+f(mn-1)=f(m)f(n) $$
For all integers $m,n$. If $f$ is linear and $f(x) \ne f(x+1)$. Find the value of $f(2025)$.
Function
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