PERTEMUAN IV Metoda Pembuktian dlm Matematika - ppt download
PERTEMUAN IV Metoda Pembuktian dlm Matematika - ppt download: Contoh : Buktikan bahwa jika x ganjil, maka x2 juga bilangan ganjil. Jawab : x bilangan ganjil, x = 2n 1, n bilangan bulat. akibatnya x2 = ( 2n 1 )2 = 4n2 4n 1 = 2(2n2 2n) 1 2n2 = bulat 2n = bulat jadi 2n2 2n = bulat jadi 2(2n2 2n) 1 = ganjil, x2 ganjil.
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