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No MATLAB, tanto i quanto j denotam a raiz quadrada de – 1. Isso porque o MATLAB é amplamente usado em matemática e em engenharia elétrica.
Nesse sentido, no MATLAB, o comando >> abs(3 + 2*i) retorna:

","status","pending_classification","hasRelatedVideo","relatedVideos",[],"similarQuestions",[90],{"_18":91,"_20":19,"_21":92,"_56":93,"_80":19,"_81":108,"_29":109},"b0e252fa-fb1e-410b-9899-706e5eeeb1b5","9eb60955-48d2-4595-b3ea-26b96955a619",[94,97,99,102,105],{"_21":95,"_60":61,"_62":96},"18d7c06c-8420-4d56-957c-6887a0a2007c","

Um sinal em tempo continuo com amplitudes discretas.

",{"_21":91,"_60":66,"_62":98},"

Um sinal em tempo discreto com amplitudes discretas.

",{"_21":100,"_60":70,"_62":101},"a947696b-4727-4d45-a64c-7c15f8d76303","

Um sinal em tempo continuo com amplitudes continuas.

",{"_21":103,"_60":74,"_62":104},"172076c6-2b0d-4b25-a50b-bc428c31afbe","

Um sinal em tempo discreto com amplitudes contínuas.

",{"_21":106,"_60":78,"_62":107},"835f3429-fc51-418a-85d3-9898c25d4047","

Um sinal digital - analógico.

","

Por definição um sinal quantizado é:

",[110],{"_21":111,"_35":112,"_37":113,"_114":115,"_116":117,"_118":119,"_120":119,"_23":121,"_128":129},"dba77f45-98bb-464b-97f3-9d964904cfc8","Engenharia de Automação","engenharia-de-automacao","tag_group_id","c1ce2cf2-b217-4cc7-8182-81c56bd3522d","parent_id","eb9315c5-bd04-4116-aa46-02c4fde320c0","created_at","2025-04-29T02:19:12.828432+00:00","updated_at",{"_122":123,"_124":125,"_126":127},"childrenCount",5,"content_count",0,"question_count",1910,"slug","engenharia-de-automacao-1",[110,131,138],{"_21":132,"_35":133,"_37":134,"_114":115,"_116":111,"_118":135,"_120":135,"_23":136,"_128":134},"eb5f620b-a3e5-44c3-88ec-faeaa626ff7a","Processamento de Sinais","processamento-de-sinais","2025-04-29T03:44:35.328997+00:00",{"_122":137,"_124":125,"_126":127},4,{"_21":117,"_35":139,"_37":140,"_114":115,"_116":-5,"_118":141,"_120":141,"_23":142,"_128":140},"Engenharia","engenharia","2025-04-29T01:55:38.635246+00:00",{"_122":143,"_124":125,"_126":144},29,351586,"tagsTree",[147],{"_21":117,"_35":139,"_37":140,"_114":115,"_116":-5,"_118":141,"_120":141,"_23":142,"_128":140,"_148":149},"children",[150],{"_21":111,"_35":112,"_37":113,"_114":115,"_116":117,"_118":119,"_120":119,"_23":121,"_128":129,"_148":151},[152],{"_21":132,"_35":133,"_37":134,"_114":115,"_116":111,"_118":135,"_120":135,"_23":136,"_128":134,"_148":153},[],"videoDislikes",{},"videoLikes",{},"actionData","errors"]

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