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INF-104 Matematika Diskrit - Himpunan - cs.unsyiah.ac.id.

INF-104 Matematika Diskrit - Himpunan - cs.unsyiah.ac.id.

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Pendahuluan<br />

<strong>Himpunan</strong><br />

Pengertian<br />

Disini akan dibuktikan hasil (1) dan (3), sisanya sebagai latihan.<br />

(1) Perhatikan bahwa<br />

dan<br />

A ∪ A = {x : x ∈ A atau x ∈ A}<br />

= {x : x ∈ A}<br />

= A<br />

A ∩ A = {x : x ∈ A dan x ∈ A}<br />

= {x : x ∈ A}<br />

= A<br />

Juga, A − A = A ∩ A ′ = ∅.<br />

zahnur@informatika.<strong>unsyiah</strong>.<strong>ac</strong>.<strong>id</strong> <strong>INF</strong>-<strong>104</strong> <strong>Matematika</strong> <strong>Diskrit</strong>

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