Find the the domain of following functions:
(i) `f(x)=sqrt(x^(2)-5)` (ii) `sin(x^(3)-x)`

Explanation

To find the domain of the given functions, we will analyze each function step by step.

### (i) Finding the domain of \( f(x) = \sqrt{x^2 - 5} \)

1. **Set the expression inside the square root greater than or equal to zero**:
\[ x^2 - 5 \geq 0 \]
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