If `f(x)=sqrtx(x > 0) and g(x)=x^2-1` are two real functions, find `fog and gof` is `fog=gof ?`

Explanation

To solve the problem, we need to find the compositions \( f(g(x)) \) and \( g(f(x)) \), and then check if they are equal.

### Step 1: Find \( f(g(x)) \)

Given:
- \( f(x) = \sqrt{x} \) for \( x > 0 \)
- \( g(x) = x^2 - 1 \)

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