If `epsilon_(0)` and `mu_(0)` are, respectively, the electric permittivity and magnetic permeability of free space, `epsilon` and `mu` the corresponding quantities in a medium, the index of refraction of the medium in terms of the above parameters is `"________________"`.

Explanation

To find the index of refraction of a medium in terms of the electric permittivity and magnetic permeability of free space and the medium, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Index of Refraction**:
The index of refraction \( n \) of a medium is defined as the ratio of the speed of light in vacuum \( c \) to the speed of light in the medium \( v \):
\[
n = \frac{c}{v}
...