Textbook Question
Even and Odd Functions
In Exercises 47–62, say whether the function is even, odd, or neither. Give reasons for your answer.
g(x) = x/(x² − 1)
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Ch. 1 - Functions
Hass15th EditionThomas' CalculusISBN: 9780137616077
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Table of contents
- Ch. 1 - Functions155
- Ch. 2 - Limits and Continuity240
- Ch. 3 - Derivatives337
- Ch. 4 - Applications of Derivatives293
- Ch. 5 - Integrals41
- Ch. 6 - Applications of Definite Integrals25
- Ch. 7 - Transcendental Functions489
- Ch. 8 - Techniques of Integration398
- Ch. 9 - First-Order Differential Equations60
- Ch. 10 - Infinite Sequences and Series119
- Ch. 11 - Parametric Equations and Polar Coordinates58
Chapter 1, Problem 1.2.23
Shifting Graphs
The accompanying figure shows the graph of y = −x² shifted to two new positions. Write equations for the new graphs.
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Verified step by step guidance1
Identify the original function: The original function given is y = -x². This is a downward-opening parabola centered at the origin (0,0).
Understand graph shifts: A graph can be shifted horizontally and/or vertically. A horizontal shift involves adding or subtracting a constant from the x-variable, while a vertical shift involves adding or subtracting a constant from the entire function.
Determine horizontal shifts: If the graph is shifted to the right by 'h' units, the equation becomes y = -(x-h)². If shifted to the left by 'h' units, it becomes y = -(x+h)².
Determine vertical shifts: If the graph is shifted upwards by 'k' units, the equation becomes y = -x² + k. If shifted downwards by 'k' units, it becomes y = -x² - k.
Combine shifts for new equations: If the graph is shifted both horizontally by 'h' units and vertically by 'k' units, the new equation is y = -(x-h)² + k. Use the information from the image to determine the specific values of 'h' and 'k' for each new graph position.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Graph Shifting
Graph shifting involves translating a function's graph horizontally or vertically without altering its shape. A vertical shift occurs when a constant is added or subtracted from the function, while a horizontal shift involves adding or subtracting from the input variable. For example, the function y = -x² shifted up by 3 units becomes y = -x² + 3.
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5:53
Graph of Sine and Cosine Function
Quadratic Functions
Quadratic functions are polynomial functions of degree two, typically expressed in the form y = ax² + bx + c. The graph of a quadratic function is a parabola, which can open upwards or downwards depending on the sign of 'a'. Understanding the standard form helps in identifying the vertex and the direction of the parabola, which is crucial when shifting the graph.
Recommended video:
6:04Introduction to Polynomial Functions
Transformation of Functions
Transformations of functions include various operations that change the position or shape of the graph. These transformations can be translations, reflections, stretches, or compressions. In the context of the given question, recognizing how to apply vertical and horizontal shifts to the original quadratic function is essential for writing the equations of the new graphs.
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5:25Intro to Transformations
Related Practice
Textbook Question
Using the Half-Angle Formulas
Find the function values in Exercises 47–50.
sin² 3π/8
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Textbook Question
Refer to the given figure. Write the radius r of the circle in terms of α and θ.
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Textbook Question
Graph the functions in Exercises 37–56.
y = |x − 2|
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Textbook Question
In Exercises 19–32, find the (a) domain and (b) range.
_____
𝔂 = -1 + ∛ 2 - x
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Textbook Question
In Exercises 9–16, determine whether the function is even, odd, or neither.
𝔂 = x - sin x
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