[tex]f: \left \{ 1,4,16,25, \frac{9}{49}, \frac{36}{25} \left\}-\ \textgreater \ A,f(x)= \sqrt{x}
[/tex]
[tex]Aflam~multimea~A:\\
f(1)= \sqrt{1} =\ \textgreater \ 1\\
f(4)= \sqrt{4} =\ \textgreater \ 2\\
f(16)= \sqrt{16} =\ \textgreater \ 4\\
f(25)= \sqrt{25} =\ \textgreater \ 5\\\\
f( \frac{9}{49} )= \sqrt{ \frac{9}{49} } =\ \textgreater \ \frac{3}{7} \\\\
f( \frac{36}{25} )= \sqrt{ \frac{36}{25} } =\ \textgreater \ \frac{6}{5}[/tex]
[tex]Imf=A= \left \{1,2,4,5, \frac{3}{7} , \frac{6}{5} \left\} \right. [/tex]
