3.4: (a, b)

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Page ID: 169966

Victoria Dominguez, Cristian Martinez, and Sanaa Saykali
Citrus College via ASCCC Open Educational Resources Initiative

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Nesta seção, os dois endpoints não estão incluídos no intervalo.

Exemplo Template:index

$(2,5)$

Solução

O intervalo acima inclui todos os números entre 2 e 5, mas como o intervalo tem parênteses nos lados esquerdo e direito do intervalo, os pontos finais não são incluídos.

Exemplo Template:index

$(-4,10)$

Solução

Semelhante à explicação dos exemplos anteriores, os pontos finais não estão incluídos no intervalo. Portanto, o intervalo inclui todos os números entre -4 e 10, mas não -4 e 10.

Até agora, os alunos devem ter uma ideia forte dos números que estão incluídos e não incluídos nos exemplos acima. Os alunos também devem ser capazes de analisar qualquer reta numérica e escrever a notação de intervalo apropriada para essa reta numérica. Experimente os exercícios a seguir para verificar a compreensão.