Bab 3 Hal.30.doc

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1.000.000.000 = 109 5.000.000.000 = 5 .109 7.500.000.000 = 7,5 . 109atau75 . 108 0,000.000.001 = 10-9 0,000.000.034 = 34 . 10-9atau 3,4 . 10-8 Pemangkatansebuahbilangandanpengoperasianbilanganbilanganberpangkatmematuhikaidah-kaidahtertentu.Berdasarkankaidah-kaidah yang segeraakandipaparkanberikutini, kitadapat pula memetikberbagaifaedah lain darinotasipemangkatan.

3.1.1 KaidahPemangkatanBilangan 1. Bilanganbukan-nolberpangkatnoladalahsatu. x0=1

(x≠ 0)

Contoh: 30 = 1

2. Bilanganberpangkatsatuadalahbilanganitusendiri. x1=x

31 = 3

3. Nolberpangkatsebuahbilanganadalahtetap nol. 0x= 0

03 = 0

4. Bilanganberpangkatnegatifadalahbalikanpengali (multiplicative inverse) daribilanganitusendiri.

x-a = 5. Bilanganberpangkatpecahanadalahakardaribilanganitusendiri, dengansukupembagidalampecahanmenjadipangkatdariakarnyasedangkansukuterbagimenj adipangkatdaribilangan yang bersangkutan.

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