Question

functions

Answer 1

\(\large \color{black}{\begin{align}

& f(x)\ f(y)=f(xy)\hspace{.33em}\\~\\
& \{x,y\}\in \mathbb{R} \hspace{.33em}\\~\\
& f(2)=4,f(\frac12)=?

\end{align}}\)

Answer 2

\[\large f(2)~=~f(4*1/2) ~=~ f(4)*f(1/2)~=~f(2)*f(2)*f(1/2)\]