Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-05-11T20:13:53Z No. of bitstreams: 1 MarcioAndreCostaBarbosa_DISSERT.pdf: 1460647 bytes, checksum: d228d971ce5deae0635151eb659cad40 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-05-19T20:10:58Z (GMT) No. of bitstreams: 1 MarcioAndreCostaBarbosa_DISSERT.pdf: 1460647 bytes, checksum: d228d971ce5deae0635151eb659cad40 (MD5) / Made available in DSpace on 2016-05-19T20:10:58Z (GMT). No. of bitstreams: 1 MarcioAndreCostaBarbosa_DISSERT.pdf: 1460647 bytes, checksum: d228d971ce5deae0635151eb659cad40 (MD5) Previous issue date: 2015-09-18 / Neste TCC tratamos de um t?pico muito b?sico por?m essencial em Matem?tica, a saber: Fun??es. Muitos alunos entram na universidade se perguntando: Para que serve fun??o? Nesse TCC procuramos nos adiantar a essa pergunta e tentar mostrar que fun??es aparecem de maneira t?o natural que foi preciso um nome para caracterizar essa associa??o dos elementos de dois conjuntos. Depois que essa defini??o foi estabelecida, aproveitamos para apresentar e formalizar alguns conceitos que as fun??es possuem, como: Crescimento/decrescimento, injetividade, etc. / In this TCC the deal with a underlying but essential topic of Mathematics, namely: Functions. Many students start their course in the University asking: Why do we need functions? With that in mind we try to antecipate to this question and we try to show that functions come up so naturally that a name was needed to express that association which exists between the elements of two sets. After this definition was established, we present and formalize some other concepts that functions might have, as: an interview of ascendence/descendence, 1-1, etc.