We are given the function $f(x) = |x-5| - 1$. We need to determine if the function is even, odd, or neither, state the range of $f(x)$, and sketch the graph of $f(x)$.
2025/4/14
1. Problem Description
We are given the function . We need to determine if the function is even, odd, or neither, state the range of , and sketch the graph of .
2. Solution Steps
(i) To determine if a function is even, we check if . To determine if a function is odd, we check if .
.
Since , and , we see that , so the function is not even.
Also, . Since and , we see that , so the function is not odd.
Therefore, the function is neither even nor odd.
(ii) The absolute value function is always non-negative, so for all .
Then, , so .
The minimum value of is 0, which occurs when . In that case, .
As moves away from 5 in either direction, increases without bound.
Thus, the range of is .
(iii) To sketch the graph, we start with the absolute value function . Then, we consider , which is the graph of shifted 5 units to the right. Finally, we consider , which is the graph of shifted down 1 unit.
The vertex of the graph is at . The graph is symmetric around . When , .
The graph intersects the x-axis when , which means , so .
This gives us or . Therefore, or . The x-intercepts are at (4,0) and (6,0).
3. Final Answer
(i) Neither
(ii)
(iii) The graph is a V-shape with vertex at . The x-intercepts are at and .