Explanation Procedure used: “To graph a rational function f ( x ) = p ( x ) q ( x ) , where p ( x ) and q ( x ) have no common factors other than constants: 1. Find any real zeros of the denominator. Determine the domain of the function and sketch any vertical asymptotes. 2. Find the horizontal asymptote or the oblique asymptote, if there is one, and sketch it. 3. Find any zeros of the function. The zeros are found by determining the zeros of the numerator. These are the first coordinates of the x -intercepts of the graph. 4. Find f ( 0 ) . This gives the y - intercept, ( 0 , f ( 0 ) ) , of the function. 5. Find other function values to determine the general shape. Then draw the graph.” Definition used: “For a rational function f ( x ) = p ( x ) q ( x ) , where p ( x ) and q ( x ) are polinomials with no common factors other than constants, if a is a zero of the denominator, then the line x = a is a vertical asymptote for the graph of the function.” “When the numerator and the denominator of a rational function have the same degree, the line y = a / b is the horizontal asymptote, where a and b are the leading coefficients of the numerator and the denominator, respectively. When the degree of the numerator of a rational function is less than the degree of the denominator, the x -axis, or y = 0 , is the horizontal asymptote. When the degree of the numerator of a rational function is greater than the degree of the denominator, there is no horizontal asymptote.” Calculation: The given function is f ( x ) = x 2 − 4 x − 2 . The equation f ( x ) = x 2 − 4 x − 2 can be written as, f ( x ) = x 2 − 4 x − 2 = ( x + 2 ) ( x − 2 ) x − 2 The numerator and denominator of the equation f ( x ) = x 2 − 4 x − 2 have the common factor x − 2 To determine To check: The graph f ( x ) = x 2 − 4 x − 2 obtained in part (a), by using a graphing calculator.

College Algebra: Graphs and Models (6th Edition)

6th Edition

ISBN: 9780134179032

Author: Marvin L. Bittinger, Judith A. Beecher, David J. Ellenbogen, Judith A. Penna

Publisher: PEARSON

See similar textbooks

Videos

Question

Chapter 4.5, Problem 53E

To determine

To draw: The hand drawn graph of the function f(x)=x2−4x−2 with all the asymptotes and list the domain, x-intercepts and y-intercepts.

To determine

To check: The graph f(x)=x2−4x−2 obtained in part (a), by using a graphing calculator.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 4.5, Problem 52E

Chapter 4.5, Problem 54E

Students have asked these similar questions

Solve for the matrix X: X (2 7³) x + ( 2 ) - (112) 6 14 8

5. Solve for the matrix X. (Hint: we can solve AX -1 = B whenever A is invertible) 2 3 0 Χ 2 = 3 1

Write p(x) = 6+11x+6x² as a linear combination of ƒ (x) = 2+x+4x² and g(x) = 1−x+3x² and h(x)=3+2x+5x²

Chapter 4 Solutions

College Algebra: Graphs and Models (6th Edition)

Ch. 4.1 - Determine the leading term, the leading...Ch. 4.1 - Prob. 2E Ch. 4.1 - Determine the leading term, the leading...Ch. 4.1 - Prob. 4E Ch. 4.1 - Prob. 5E Ch. 4.1 - Determine the leading term, the leading...Ch. 4.1 - Prob. 7E Ch. 4.1 - Prob. 8E Ch. 4.1 - Determine the leading term, the leading...Ch. 4.1 - Prob. 10E

Knowledge Booster

$Algebra$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.

To draw: The hand drawn graph of the function f ( x ) = x 2 − 4 x − 2 with all the asymptotes and list the domain, x -intercepts and y -intercepts.

Solution Summary: The author explains how to draw a hand drawn graph of the function f(x) with all the asymptotes and list the domain, x -intercepts and y

Videos

To draw: The hand drawn graph of the function f(x)=x2−4x−2 with all the asymptotes and list the domain, x-intercepts and y-intercepts.

To check: The graph f(x)=x2−4x−2 obtained in part (a), by using a graphing calculator.

Want to see the full answer?

Chapter 4 Solutions