Question

How do you solve `4 log x= 4`?

Answer 1

`x = e`

Explanation:

It's quite simple here, you first divide both sides of the equation by 4, so you now have to solve `ln(x) = 1`, which means that `x = e` because `ln(x) = 1 iff x = e^1 = e` when you apply the exponential function on both sides of the equation (the exponential is a one-on-one function so it guarantees you the solution you will find is unique).