Question: User: how to find the sum of two functions
1. **State the problem:** We want to find the sum of two functions, say $f(x)$ and $g(x)$.
2. **Formula:** The sum of two functions is defined as $$(f+g)(x) = f(x) + g(x).$$
3. **Explanation:** To find the sum, you add the outputs of each function for the same input $x$.
4. **Example:** If $f(x) = 2x + 3$ and $g(x) = x^2 - 1$, then
$$(f+g)(x) = (2x + 3) + (x^2 - 1) = x^2 + 2x + 2.$$
5. **Summary:** Simply add the expressions of the two functions together, combining like terms if possible.