jika log3=0,4771 dan log2=0,3010 maka nilai log75=

jawab

log 75 = log 3 + log 25
= log 3 + log 5²
= log 3 + 2 log 5
= log 3 + 2 (log 10 /2 )
= log 3 + 2 (log 10 - log 2)
= log 3  + 2 log 10  - 2 log 2
= 0,4771 + 2(1) - 2(0,3010)
= 0,4771 + 2 - 0,6020
= 1,8751