• zmudz
The function $$f(n)$$ is defined for all integers $$n$$, such that $$f(x) + f(y) = f(x + y) - 2xy - 1$$ for all integers $$x$$ and $$y$$ and $$f(1) = 1$$. Find $$f(n)$$.
Mathematics

Looking for something else?

Not the answer you are looking for? Search for more explanations.