Neka
. Riješite:
Let
. Solve the equation:
[lang=hr]
Neka $\sigma:\mathbb{R} \backslash \{0\} \rightarrow \mathbb{R}$. Riješite:
$$2y\sigma(x) + \sigma(x + y) = \sigma(2xy) + 69(x + y)$$
[/lang]
[lang=en]
Let $\sigma: \mathbb{R} \backslash \{0\} \rightarrow \mathbb{R}$. Solve the equation:
$$2y\sigma(x) + \sigma(x + y) = \sigma(2xy) + 69(x + y).$$
[/lang]
