Question

Diketahui log2=0.3010 log3=0.4771 log7=0.8451 tentukan log84

Answer 1

Log 84 = log (12 × 7)
= log 12 + log 7
= log (4 × 3) + log 7
= log 4 + log 3 + log 7
= log 2^2 + log 3 + log 7
= 2 (log 2) + log 3 + log 7
= 2(0,3010) + 0,4771 + 0,8451
= 1,9242