\[\large{f(x-y) = f(x) + xy + f(y)}\]

Let \(f: \mathbb R \to \mathbb R\) be a function satisfying the above functional equation for every \(x \in \mathbb R\). Then find the value of \(f(20.15)\) to three places of decimals.

×

Problem Loading...

Note Loading...

Set Loading...