Question

This is a logs question

If u=x/y^2, which expression is equivalent to log u?

1) log x + 2 log y
2) 2(log x- log y)
3) 2(log x + log y)
4) log x- 2 log y

Answer 1

log(x/y^2) = log(x) - log(y^2)
so, (4)