Função complexa F(z)=z^2-1, com imagem apenas real.
<ul><li><a href="//commons.wikimedia.org/wiki/File:Complex_function_F(z)%3Dz%5E2-1.png" title="File:Complex function F(z)=z^2-1.png">Complex_function_F(z)=z^2-1.png</a>: <a href="//commons.wikimedia.org/w/index.php?title=User:TCGV&amp;action=edit&amp;redlink=1" class="new" title="User:TCGV (page does not exist)">user:TCGV</a></li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Jan_Friberg" title="User:Jan Friberg">Jan Friberg</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Jan_Friberg" title="User talk:Jan Friberg"><span class="signature-talk">talk</span></a>)</li></ul>
<ul><li><a href="//commons.wikimedia.org/wiki/File:Complex_function_F(z)%3Dz%5E2-1.png" title="File:Complex function F(z)=z^2-1.png">Complex_function_F(z)=z^2-1.png</a></li></ul>