Pregunta
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Solución
Certainly! Let’s analyze the function provided in part (a):
(a)
1. Function Overview
The function
is a rational function, specifically a type of hyperbola. It’s a reciprocal function multiplied by -1, which affects its graph’s orientation.
2. Domain and Range
-
Domain: All real numbers except
(since division by zero is undefined). -
Range: All real numbers except
.
3. Asymptotes
-
Vertical Asymptote:
- The function approaches infinity or negative infinity as
approaches 0 from the right or left.
- The function approaches infinity or negative infinity as
-
Horizontal Asymptote:
(the x-axis) - As
becomes very large (positively or negatively), approaches 0.
- As
4. Graph Characteristics
-
Quadrants: The graph of
lies in the second and fourth quadrants because: - For
, (4th quadrant). - For
, (2nd quadrant).
- For
-
Symmetry:
- The graph is symmetric with respect to the origin. This means if you rotate the graph 180 degrees around the origin, it remains unchanged. Mathematically, this is known as odd symmetry, satisfying
.
- The graph is symmetric with respect to the origin. This means if you rotate the graph 180 degrees around the origin, it remains unchanged. Mathematically, this is known as odd symmetry, satisfying
5. Behavior Analysis
-
As
: -
As
: -
As
: -
As
:
6. Plotting Points
|
|
---|---|
-2 | 0.5 |
-1 | 1 |
-0.5 | 2 |
0.5 | -2 |
1 | -1 |
2 | -0.5 |
Plotting these points will help visualize the hyperbola’s shape, confirming its placement in the second and fourth quadrants with the described asymptotes.
7. Summary
The function
is a hyperbola with:
- Vertical Asymptote at
- Horizontal Asymptote at
- Symmetry about the origin
- Located in the second and fourth quadrants
Understanding these properties will aid in graphing the function and analyzing its behavior across different values of
.
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Bonus Knowledge
Did you know that the equation
describes a hyperbola? This fascinating shape comes from a family of conic sections and has interesting properties, including asymptotes, which are the lines that the curve approaches but never touches. The asymptotes for this equation are the x-axis and y-axis, creating a visual intersection point in the Cartesian plane!
When grappling with this equation, a common mistake is forgetting the domain restrictions. Since you can’t divide by zero, x cannot equal zero. This oversight might lead to incorrect graphing, resulting in a broken line in your visualization! Always check for such restrictions to ensure your graphs are accurate and complete.

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