Parabola Domain Range 8Daf48
1. **State the problem:** We are given the function $f(x) = (x - 1)^2 + 2$ and need to find its domain and range.
2. **Domain:** The domain of a function is the set of all possible input values ($x$) for which the function is defined. Since $f(x)$ is a quadratic function (a polynomial), it is defined for all real numbers.
\[ \text{Domain} = (-\infty, \infty) \]
3. **Range:** The function $f(x) = (x - 1)^2 + 2$ is a parabola opening upwards because the coefficient of the squared term is positive.
- The vertex form of a parabola is $f(x) = a(x - h)^2 + k$, where $(h, k)$ is the vertex.
- Here, $a = 1$, $h = 1$, and $k = 2$, so the vertex is at $(1, 2)$.
- Since the parabola opens upwards, the minimum value of $f(x)$ is at the vertex, which is $2$.
- Therefore, the range is all $y$ values greater than or equal to $2$.
\[ \text{Range} = [2, \infty) \]
4. **Graph description:** The graph is a parabola with vertex at $(1, 2)$ opening upwards. The $x$-axis and $y$-axis intersect at the origin $(0,0)$.
5. **Summary:**
- Domain: $(-\infty, \infty)$
- Range: $[2, \infty)$
This completes the solution.