If y = log(x), then x=?

traditionally, ¨log¨ was first used to define the base e, since no other logs were deemed useful. As the advances of the metric system came along, log became base 10 and ¨ln¨ is base e. HOWEVER, it depends where you are using it. If you are doing mathematics at a high level, most people will use log to mean base e, but in sciences, they will use log to be base 10, and ln to be base e. It is therefore always safest to use ln for e, and if it is any other base, use log_base

Y Log X

x = 10^y.

log is the abbreviation for the common logarithm with base 10.

ln is the abbreviation for the natural logarithm with base e.

So you shouldn't think e when you see log... ln is for base e; log is for base 10.

usually log(x) is a base-10 logarithm

so x=10^y

rule:

log(base a) b = c =>b=a^c

y=log(x)

x=10^y

log(x) generally is read as log_10(x)....or log base 10 of x.

=> log_10(x) = y

i.e. x = 10^y

If we had log_e(x) => lnx = y

=> x = e^y

:)>