If `f(x)=xtan^(-1)x ,` find `f^(prime)(sqrt(3))` using the first principle.

Explanation

To find \( f'(\sqrt{3}) \) using the first principle of differentiation, we start with the function:

\[ f(x) = x \tan^{-1}(x) \]

### Step 1: Write the definition of the derivative using the first principle
The derivative of \( f(x) \) at a point \( x \) is given by:
...