Question

Jika log 3 = x dan log 5 = y, maka log 45 =...

Answer 1

Log 45 = log (3² × 5)
= log 3² + log 5
= 2(log 3) + log 5
=2x+y

semoga membantu

Answer 2

Log 3 = x
log 5 = y
log 45 = ........?

Penyelesaian :
log 45 = log (3² x 5)
log 45 = log 3² + log 5
log 45 = 2 (log 3) + log 5
log 45 = 2(x) + y
log 45 = 2x + y

Jadi, nilai log 45 adalah 2x + y

Ok?