Mute
Professor Emilio Máximo
Para este tipo de exercício precisamos verificar 2 condições, e são estas: 1ª) É necessário que todo elemento x ∈ A participe de pelo menos um par (x, y) ∈ f, isto é, todo elemento de A “deve servir como ponto de partida de flecha". 2ª) É necessário que cada elemento x ∈A participe de apenas um único par (x, y) ∈ f, isto é, cada elemento de A “deve servir como ponto de partida de uma única flecha".
Follow
23
1
9
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