Problem

Let \(f(x) = \sqrt{x+2}\) and \(g(x) = \frac{1}{x}\). Find the domain of the product of the functions \(f(x)g(x)\).

Solution

Step 1 :First, find the domain of each function separately. The function \(f(x)\) is defined for all \(x\) such that \(x+2 \geq 0\), so the domain of \(f(x)\) is \([-2, \infty)\). The function \(g(x)\) is defined for all \(x\) such that \(x \neq 0\), so the domain of \(g(x)\) is \((-\infty, 0) \cup (0, \infty)\).

Step 2 :The product of the functions \(f(x)g(x)\) is defined where both functions are defined. This is the intersection of the domains of \(f(x)\) and \(g(x)\).

Step 3 :The intersection of \([-2, \infty)\) and \((-\infty, 0) \cup (0, \infty)\) is \((-2, 0) \cup (0, \infty)\).

From Solvely APP
Source: https://solvelyapp.com/problems/vpqcXRPp8K/

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