Sa se studieze injectivitatea, surjectivitatea si bijectivitatea funciilor:
f:R->R,f(x)= [tex] \left \{ {{2x-1,x \leq 0} \atop {x+a,a\ \textgreater \ 0}} \right. [/tex]
b)g:R->R,g(x)=[tex] \left \{ {{x, x \leq 1} \atop {ax+b ,x apartine (1,3)}} \right.
2x+4, x \geq 3
Dau coroana[/tex]