Nilaidari2log8−2log18+2log36=....

Pertanyaan

$\mathrm{Nilai}\;\mathrm{dari}\;{}^2\log\;8\;-\;{}^2\log\;18+\;{}^2\log\;36\;=\;....$

Y. Laksmi

Master Teacher

Mahasiswa/Alumni Universitas Negeri Semarang

Jawaban terverifikasi

Pembahasan

$Gunakan space sifat minus sifat space logaritma space berikut space colon log presuperscript straight a space straight a to the power of straight n equals straight n log presuperscript straight a space straight b space plus space log presuperscript straight a space straight c space equals space log presuperscript straight a space bc log presuperscript straight a space straight b space minus space log presuperscript straight a space straight c space equals space log presuperscript straight a space straight b over straight c Penyelesaian space colon equals log presuperscript 2 space 8 minus log presuperscript 2 space 18 plus log presuperscript 2 space 36 equals log presuperscript 2 open parentheses fraction numerator 8.36 over denominator 18 end fraction close parentheses equals log presuperscript 2 space 16 equals log presuperscript 2 space 2 to the power of 4 equals 4$

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