Question

How do you solve `e^x=4`?

Answer 1

The solution is `x=1.38`

Explanation:

The operation inverse of the exponential is the logarithm.
Then we apply the natural logarithm (`ln`) on both sides of the equation:

`e^x=4`

`ln(e^x)=ln(4)`

`x=ln(4)\approx1.38`.