### Home > PC > Chapter 3 > Lesson 3.3.2 > Problem 3-127

3-127.

We can use the idea of solving a power equation to find the base of a natural log. Recall the natural log (

Enter

. You should end up with Change this to

. Convert your equation from log form to exponent form and solve for the base. Write your answer out to five decimal places. This number you just found is called

, which is the base of natural log. The numberis an irrational number which is very important in mathematics. You will learn more about this number later in chapter 8.