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INTRODUÇÃO AO CALCULO – INTERVALOS REAIS
Estudo engenharia civil e estou com duvidas em alguns exercicios, gostaria q me esplica-se como resolver esse.
A={x pertence aos númeroos naturais / x=4n, com n pertencendo aos numeros naturais}
[B={x pertence aos numeros naturais exeto 0, / 20/x=n, com n pertencendo aos numeros naturais}
ENTÃO O NUMERO DE ELEMENTOS DE A interseção b É:
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