Question

What is log used for in practical life ? O.o

Answer 1

One example is the decibel (dB) which is a logarithmic measure of relative sound pressure levels. Excessive levels of sound are damaging to hearing.

Answer 2

Seriously ?!

Answer 3

it used to be used to make multiplying numbers easier.

Answer 4

Either way... It doesnt make sense to me -_-

Answer 5

if exponential functions make sense to you, then this is just the opposite

Answer 6

Many processes have a rate of change that depends on what its current value is, like radioactive decay, population growth, and so on. Logarthims let us work with these relationships conveniently.

Answer 7

They are extremely practical in the sense that, without them, most of the real-world wouldn't be describable using mathematics.

Answer 8

I see .. Makes sense.

Answer 9

you cant pass your math test without knowing how to use logs. Practical enough?

Answer 10

jk:P