The function $f : / mathbb{r} / rightarrow / mathbb{r}$ satisfies $f (x) f (y) - f (xy) = x + y$ for all $x$, $y / in / mathbb{r}$. find $f (x) $.
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Home » Mathematics » The function $f : / mathbb{r} / rightarrow / mathbb{r}$ satisfies $f (x) f (y) - f (xy) = x + y$ for all $x$, $y / in / mathbb{r}$. find $f (x) $.