Diketahui log 2=a,log 5=b maka log 40 adalah?

Materi : Logaritma
Kelas : X SMA

log 2 = a
log 5 = b

log 40 = log (2 × 2 × 2 × 5)
log 40 = log2 + log 2 + log 2+ log 5
log 40 = a + a + a + b
log 40 = 3a + b

Semoga Memabantu ^_^

log40
= log(8 x 5)
= log8 + log5
= log2³ + log5
= 3 x log2 + log5
= 3a + b