[tex]\Large\boxed{\begin{array}{l}\underline{\rm Dom\acute inio:}\\\sf D~\!\!efinic_{\!\!,}\tilde ao: Valores~do~1^o~conjunto\\\underline{\rm Contradom\acute inio:}\\\sf D~\!\!efinic_{\!\!,}\tilde ao: Valores~do~2^o~conjunto\\\underline{\rm Imagem:}\\\sf D~\!\!efinic_{\!\!,}\tilde ao:~valores~do~2^o~conjunto~que\\\sf tem~correspond\hat encia~com~os~valores\\\sf do~1^o~conjunto.\end{array}}[/tex]
[tex]\large\boxed{\begin{array}{l}\underline{\rm Observe~a~figura~que~eu~anexei.}\\\sf vamos~obter~a~imagem~do~conjunto~A~assim:\\\sf quando~x=0\longrightarrow f(0)=2\cdot0-1=-1\\\sf x=1\longrightarrow f(1)=2\cdot1-1=1\\\sf x=2\longrightarrow f(2)=2\cdot2-1=3\\\sf x=3\longrightarrow f(3)=2\cdot3-1=5\\\sf x=4\longrightarrow f(4)=2\cdot4-1=7\\\sf Im=\{-1,1,3,5,7\}\\\sf D=\{0,1,2,3,4\}\\\sf CD=\{-2,-1,0,1,2,3,4,5,6,7,8,9,10\}\end{array}}[/tex]
