College Algebra (MindTap Course List)
12th Edition
ISBN: 9781305652231
Author: R. David Gustafson, Jeff Hughes
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 7.2, Problem 61E
To determine
To Find:
How to distinguish between the equation of
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
College Algebra (MindTap Course List)
Ch. 7.1 - Prob. 1SCCh. 7.1 - Prob. 2SCCh. 7.1 - Prob. 3SCCh. 7.1 - Prob. 4SCCh. 7.1 - Prob. 5SCCh. 7.1 - Prob. 6SCCh. 7.1 - Find the vertex and yintercepts of the parabola...Ch. 7.1 - Prob. 8SCCh. 7.1 - Prob. 9SCCh. 7.1 - Prob. 1E
Ch. 7.1 - Prob. 2ECh. 7.1 - Prob. 3ECh. 7.1 - Prob. 4ECh. 7.1 - Prob. 5ECh. 7.1 - Determine whether the graph of the parabola opens...Ch. 7.1 - Prob. 7ECh. 7.1 - Determine whether the graph of the parabola opens...Ch. 7.1 - Fill in the blanks. A parabola is the set of all...Ch. 7.1 - Prob. 10ECh. 7.1 - Prob. 11ECh. 7.1 - Prob. 12ECh. 7.1 - Prob. 13ECh. 7.1 - Prob. 14ECh. 7.1 - Prob. 15ECh. 7.1 - Prob. 16ECh. 7.1 - Prob. 17ECh. 7.1 - Prob. 18ECh. 7.1 - Prob. 19ECh. 7.1 - Prob. 20ECh. 7.1 - Prob. 21ECh. 7.1 - Prob. 22ECh. 7.1 - Prob. 23ECh. 7.1 - Prob. 24ECh. 7.1 - Prob. 25ECh. 7.1 - Prob. 26ECh. 7.1 - Prob. 27ECh. 7.1 - Prob. 28ECh. 7.1 - Prob. 29ECh. 7.1 - Prob. 30ECh. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Find an equation in standard form of each parabola...Ch. 7.1 - Write each parabola in standard form and graph it....Ch. 7.1 - Write each parabola in standard form and graph it....Ch. 7.1 - Write each parabola in standard form and graph it....Ch. 7.1 - Write each parabola in standard form and graph it....Ch. 7.1 - Write each parabola in standard form and graph it....Ch. 7.1 - Write each parabola in standard form and graph it....Ch. 7.1 - Write each parabola in standard form and graph it....Ch. 7.1 - Write each parabola in standard form and graph it....Ch. 7.1 - Write each parabola in standard form and graph it....Ch. 7.1 - Write each parabola in standard form and graph it....Ch. 7.1 - Write each parabola in standard form and graph it....Ch. 7.1 - Prob. 62ECh. 7.1 - Prob. 63ECh. 7.1 - Prob. 64ECh. 7.1 - Prob. 65ECh. 7.1 - Prob. 66ECh. 7.1 - Prob. 67ECh. 7.1 - Ripples in a pond When a stone is thrown into the...Ch. 7.1 - Prob. 69ECh. 7.1 - Prob. 70ECh. 7.1 - Meshing gear For design purpose, the large gear is...Ch. 7.1 - Prob. 72ECh. 7.1 - Prob. 73ECh. 7.1 - Searchlight reflectors A parabolic mirror reflect...Ch. 7.1 - Writing equation of the parabolas Derive the...Ch. 7.1 - Projectiles The cannonball in the illustration...Ch. 7.1 - Satellite antennas The cross section of the...Ch. 7.1 - Design of a satellite antenna The cross section of...Ch. 7.1 - Prob. 79ECh. 7.1 - Operating a resort A resort owner plans to build...Ch. 7.1 - Design of a parabolic reflector Find the outer...Ch. 7.1 - Design of a suspension bridge The cable between...Ch. 7.1 - Gateway Arch The gateway Arch in St.Louis has a...Ch. 7.1 - Building tunnels A construction firm plans to...Ch. 7.1 - Prob. 85ECh. 7.1 - Prob. 86ECh. 7.1 - Prob. 87ECh. 7.1 - Prob. 88ECh. 7.1 - Prob. 89ECh. 7.1 - Prob. 90ECh. 7.1 - Prob. 91ECh. 7.1 - Prob. 92ECh. 7.1 - Prob. 93ECh. 7.1 - Prob. 94ECh. 7.1 - Prob. 95ECh. 7.1 - Prob. 96ECh. 7.1 - Prob. 97ECh. 7.1 - In Exercises 95-98, match the equation of the...Ch. 7.1 - Prob. 99ECh. 7.1 - Prob. 100ECh. 7.1 - Prob. 101ECh. 7.1 - Prob. 102ECh. 7.2 - Self Check Find an equation in the standard form...Ch. 7.2 - Prob. 2SCCh. 7.2 - Prob. 3SCCh. 7.2 - Prob. 4SCCh. 7.2 - Prob. 5SCCh. 7.2 - Prob. 6SCCh. 7.2 - Prob. 7SCCh. 7.2 - Prob. 1ECh. 7.2 - Prob. 2ECh. 7.2 - Prob. 3ECh. 7.2 - Prob. 4ECh. 7.2 - Prob. 5ECh. 7.2 - Prob. 6ECh. 7.2 - Prob. 7ECh. 7.2 - Prob. 8ECh. 7.2 - Prob. 9ECh. 7.2 - Prob. 10ECh. 7.2 - Prob. 11ECh. 7.2 - Prob. 12ECh. 7.2 - Prob. 13ECh. 7.2 - Prob. 14ECh. 7.2 - Prob. 15ECh. 7.2 - Prob. 16ECh. 7.2 - Prob. 17ECh. 7.2 - Prob. 18ECh. 7.2 - Prob. 19ECh. 7.2 - Prob. 20ECh. 7.2 - Prob. 21ECh. 7.2 - Prob. 22ECh. 7.2 - Prob. 23ECh. 7.2 - Prob. 24ECh. 7.2 - Prob. 25ECh. 7.2 - Prob. 26ECh. 7.2 - Prob. 27ECh. 7.2 - Prob. 28ECh. 7.2 - Prob. 29ECh. 7.2 - Prob. 30ECh. 7.2 - Prob. 31ECh. 7.2 - Prob. 32ECh. 7.2 - Graph each ellipse. x225+y29=1Ch. 7.2 - Graph each ellipse. x236+y225=1Ch. 7.2 - Graph each ellipse. x225+y249=1Ch. 7.2 - Graph each ellipse. 4x2+y2=4Ch. 7.2 - Graph each ellipse. x216+(y+2)236=1Ch. 7.2 - Graph each ellipse. (x1)2+4y225=4Ch. 7.2 - Graph each ellipse. (x4)249+(y2)29=1Ch. 7.2 - Graph each ellipse. (x1)225+y24=1Ch. 7.2 - Write each ellipse in standard form. 4x2+y22y=15Ch. 7.2 - Prob. 42ECh. 7.2 - Write each ellipse in standard form....Ch. 7.2 - Prob. 44ECh. 7.2 - Graph each ellipse. x2+4y24x+8y+4=0Ch. 7.2 - Prob. 46ECh. 7.2 - Prob. 47ECh. 7.2 - Prob. 48ECh. 7.2 - Prob. 49ECh. 7.2 - Prob. 50ECh. 7.2 - Pool tables Find an equation in standard form of...Ch. 7.2 - Prob. 52ECh. 7.2 - Prob. 53ECh. 7.2 - Prob. 54ECh. 7.2 - Prob. 55ECh. 7.2 - Prob. 56ECh. 7.2 - Prob. 57ECh. 7.2 - Prob. 58ECh. 7.2 - Prob. 59ECh. 7.2 - Prob. 60ECh. 7.2 - Prob. 61ECh. 7.2 - Prob. 62ECh. 7.2 - Discovery and Writing If F is a focus of the...Ch. 7.2 - Finding the focal width In the ellipse shown,...Ch. 7.2 - Prove that segment FV in Example 7 is the shortest...Ch. 7.2 - Prob. 66ECh. 7.2 - The distance between point P(x,y) and the point...Ch. 7.2 - Prob. 68ECh. 7.2 - Prob. 69ECh. 7.2 - Prob. 70ECh. 7.2 - Prob. 71ECh. 7.2 - Prob. 72ECh. 7.2 - Prob. 73ECh. 7.2 - Prob. 74ECh. 7.2 - Prob. 75ECh. 7.2 - Prob. 76ECh. 7.2 - Prob. 77ECh. 7.2 - Prob. 78ECh. 7.3 - Write an equation in standard form of the...Ch. 7.3 - Prob. 2SCCh. 7.3 - Prob. 3SCCh. 7.3 - Prob. 4SCCh. 7.3 - Prob. 1ECh. 7.3 - Prob. 2ECh. 7.3 - Prob. 3ECh. 7.3 - Prob. 4ECh. 7.3 - Prob. 5ECh. 7.3 - Prob. 6ECh. 7.3 - Prob. 7ECh. 7.3 - Prob. 8ECh. 7.3 - Prob. 9ECh. 7.3 - Prob. 10ECh. 7.3 - Prob. 11ECh. 7.3 - Prob. 12ECh. 7.3 - Prob. 13ECh. 7.3 - Prob. 14ECh. 7.3 - Prob. 15ECh. 7.3 - Prob. 16ECh. 7.3 - Prob. 17ECh. 7.3 - Prob. 18ECh. 7.3 - Prob. 19ECh. 7.3 - Prob. 20ECh. 7.3 - Prob. 21ECh. 7.3 - Prob. 22ECh. 7.3 - Prob. 23ECh. 7.3 - Prob. 24ECh. 7.3 - Prob. 25ECh. 7.3 - Prob. 26ECh. 7.3 - Prob. 27ECh. 7.3 - Prob. 28ECh. 7.3 - Prob. 29ECh. 7.3 - Prob. 30ECh. 7.3 - Prob. 31ECh. 7.3 - Prob. 32ECh. 7.3 - Write an equation in standard form of each...Ch. 7.3 - Prob. 34ECh. 7.3 - Graph each hyperbola. x29y24=1Ch. 7.3 - Prob. 36ECh. 7.3 - Graph each hyperbola. 4x23y2=36Ch. 7.3 - Graph each hyperbola. 3x24y2=36Ch. 7.3 - Graph each hyperbola. y2x2=1Ch. 7.3 - Graph each hyperbola. x2y24=1Ch. 7.3 - Graph each hyperbola. (x+2)92y24=1Ch. 7.3 - Graph each hyperbola. y29(x2)236=1Ch. 7.3 - Graph each hyperbola. 4(y2)29(x+1)2=36Ch. 7.3 - Prob. 44ECh. 7.3 - Prob. 45ECh. 7.3 - Prob. 46ECh. 7.3 - Prob. 47ECh. 7.3 - Prob. 48ECh. 7.3 - Prob. 49ECh. 7.3 - Prob. 50ECh. 7.3 - Prob. 51ECh. 7.3 - Prob. 52ECh. 7.3 - Prob. 53ECh. 7.3 - Prob. 54ECh. 7.3 - Prob. 55ECh. 7.3 - Prob. 56ECh. 7.3 - Prob. 57ECh. 7.3 - Astronomy Some comets have a hyperbolic orbit,...Ch. 7.3 - Prob. 59ECh. 7.3 - Prob. 60ECh. 7.3 - Navigation The LORAN LOng RAnge Navigation system...Ch. 7.3 - Prob. 62ECh. 7.3 - Prob. 63ECh. 7.3 - Sonic boom The position of a sonic boom caused by...Ch. 7.3 - Discovery and Writing Describe a hyperbola.Ch. 7.3 - Prob. 66ECh. 7.3 - Prob. 67ECh. 7.3 - Prob. 68ECh. 7.3 - Prob. 69ECh. 7.3 - Prob. 70ECh. 7.3 - Prob. 71ECh. 7.3 - Prob. 72ECh. 7.3 - Prob. 73ECh. 7.3 - Prob. 74ECh. 7.3 - Prob. 75ECh. 7.3 - Prob. 76ECh. 7.3 - Prob. 77ECh. 7.3 - Prob. 78ECh. 7.3 - Prob. 79ECh. 7.3 - Prob. 80ECh. 7.4 - Prob. 1SCCh. 7.4 - Prob. 2SCCh. 7.4 - Prob. 3SCCh. 7.4 - Prob. 4SCCh. 7.4 - Prob. 5SCCh. 7.4 - Prob. 1ECh. 7.4 - Prob. 2ECh. 7.4 - Prob. 3ECh. 7.4 - Prob. 4ECh. 7.4 - Prob. 5ECh. 7.4 - Prob. 6ECh. 7.4 - Prob. 7ECh. 7.4 - Prob. 8ECh. 7.4 - Prob. 9ECh. 7.4 - Prob. 10ECh. 7.4 - Prob. 11ECh. 7.4 - Prob. 12ECh. 7.4 - Prob. 13ECh. 7.4 - Prob. 14ECh. 7.4 - Prob. 15ECh. 7.4 - Prob. 16ECh. 7.4 - Prob. 17ECh. 7.4 - Prob. 18ECh. 7.4 - Prob. 19ECh. 7.4 - Prob. 20ECh. 7.4 - Prob. 21ECh. 7.4 - Prob. 22ECh. 7.4 - Prob. 23ECh. 7.4 - Prob. 24ECh. 7.4 - Prob. 25ECh. 7.4 - Prob. 26ECh. 7.4 - Prob. 27ECh. 7.4 - Prob. 28ECh. 7.4 - Prob. 29ECh. 7.4 - Prob. 30ECh. 7.4 - Prob. 31ECh. 7.4 - Prob. 32ECh. 7.4 - Prob. 33ECh. 7.4 - Prob. 34ECh. 7.4 - Prob. 35ECh. 7.4 - Prob. 36ECh. 7.4 - Prob. 37ECh. 7.4 - Prob. 38ECh. 7.4 - Prob. 39ECh. 7.4 - Prob. 40ECh. 7.4 - Prob. 41ECh. 7.4 - Prob. 42ECh. 7.4 - Prob. 43ECh. 7.4 - Prob. 44ECh. 7.4 - Prob. 45ECh. 7.4 - Prob. 46ECh. 7.4 - Prob. 47ECh. 7.4 - Prob. 48ECh. 7.4 - Prob. 49ECh. 7.4 - Prob. 50ECh. 7.4 - Prob. 51ECh. 7.4 - Prob. 52ECh. 7.4 - Prob. 53ECh. 7.4 - Prob. 54ECh. 7.4 - Prob. 55ECh. 7.4 - Prob. 56ECh. 7.4 - Prob. 57ECh. 7.4 - Prob. 58ECh. 7.4 - Prob. 59ECh. 7.4 - Prob. 60ECh. 7.4 - Prob. 61ECh. 7.4 - Prob. 62ECh. 7.4 - Prob. 63ECh. 7.4 - Determine if the statement is true or false. If...Ch. 7.4 - Prob. 65ECh. 7.4 - Prob. 66ECh. 7.CR - Prob. 1ECh. 7.CR - Prob. 2ECh. 7.CR - Prob. 3ECh. 7.CR - Prob. 4ECh. 7.CR - Prob. 5ECh. 7.CR - Prob. 6ECh. 7.CR - Prob. 7ECh. 7.CR - Prob. 8ECh. 7.CR - Prob. 9ECh. 7.CR - Prob. 10ECh. 7.CR - Prob. 11ECh. 7.CR - Prob. 12ECh. 7.CR - Prob. 13ECh. 7.CR - Prob. 14ECh. 7.CR - Prob. 15ECh. 7.CR - Prob. 16ECh. 7.CR - Prob. 17ECh. 7.CR - Prob. 18ECh. 7.CR - Prob. 19ECh. 7.CR - Prob. 20ECh. 7.CR - Prob. 21ECh. 7.CR - Prob. 22ECh. 7.CR - Prob. 23ECh. 7.CR - Prob. 24ECh. 7.CR - Prob. 25ECh. 7.CR - Prob. 26ECh. 7.CR - Prob. 27ECh. 7.CR - Prob. 28ECh. 7.CR - Prob. 29ECh. 7.CR - Prob. 30ECh. 7.CT - Prob. 1CTCh. 7.CT - Prob. 2CTCh. 7.CT - Prob. 3CTCh. 7.CT - Prob. 4CTCh. 7.CT - Prob. 5CTCh. 7.CT - Prob. 6CTCh. 7.CT - Prob. 7CTCh. 7.CT - Prob. 8CTCh. 7.CT - Prob. 9CTCh. 7.CT - Prob. 10CTCh. 7.CT - Prob. 11CTCh. 7.CT - Prob. 12CTCh. 7.CT - Prob. 13CTCh. 7.CT - Prob. 14CTCh. 7.CT - Prob. 15CTCh. 7.CT - Prob. 16CTCh. 7.CT - Solve each system using substitution and...Ch. 7.CT - Prob. 18CTCh. 7.CT - Prob. 19CTCh. 7.CT - Prob. 20CTCh. 7.CM - Prob. 1CMCh. 7.CM - Prob. 2CMCh. 7.CM - Prob. 3CMCh. 7.CM - Prob. 4CMCh. 7.CM - Simplify each expression Assume that all variables...Ch. 7.CM - Prob. 6CMCh. 7.CM - Prob. 7CMCh. 7.CM - Prob. 8CMCh. 7.CM - Prob. 9CMCh. 7.CM - Prob. 10CMCh. 7.CM - Prob. 11CMCh. 7.CM - Prob. 12CMCh. 7.CM - Prob. 13CMCh. 7.CM - Prob. 14CMCh. 7.CM - Prob. 15CMCh. 7.CM - Prob. 16CMCh. 7.CM - Prob. 17CMCh. 7.CM - Prob. 18CMCh. 7.CM - Prob. 19CMCh. 7.CM - Prob. 20CMCh. 7.CM - Prob. 21CMCh. 7.CM - Prob. 22CMCh. 7.CM - Prob. 23CMCh. 7.CM - Prob. 24CMCh. 7.CM - Prob. 25CMCh. 7.CM - Prob. 26CMCh. 7.CM - Prob. 27CMCh. 7.CM - Prob. 28CMCh. 7.CM - Prob. 29CMCh. 7.CM - Prob. 30CMCh. 7.CM - Prob. 31CMCh. 7.CM - Prob. 32CMCh. 7.CM - Prob. 33CMCh. 7.CM - Prob. 34CMCh. 7.CM - Prob. 35CMCh. 7.CM - Prob. 36CMCh. 7.CM - Prob. 37CMCh. 7.CM - Prob. 38CMCh. 7.CM - Prob. 39CMCh. 7.CM - Prob. 40CMCh. 7.CM - Prob. 41CMCh. 7.CM - Prob. 42CMCh. 7.CM - Prob. 43CMCh. 7.CM - Prob. 44CMCh. 7.CM - Prob. 45CMCh. 7.CM - Prob. 46CMCh. 7.CM - Prob. 47CMCh. 7.CM - Prob. 48CMCh. 7.CM - Prob. 49CMCh. 7.CM - Prob. 50CMCh. 7.CM - Prob. 51CMCh. 7.CM - Prob. 52CMCh. 7.CM - Prob. 53CMCh. 7.CM - Prob. 54CMCh. 7.CM - Prob. 55CMCh. 7.CM - Prob. 56CMCh. 7.CM - Prob. 57CMCh. 7.CM - Prob. 58CMCh. 7.CM - Prob. 59CMCh. 7.CM - Prob. 60CMCh. 7.CM - Prob. 61CMCh. 7.CM - Prob. 62CMCh. 7.CM - Prob. 63CMCh. 7.CM - Prob. 64CM
Knowledge Booster
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.Similar questions
- Discovery and Writing Describe a hyperbola.arrow_forwardWriting equation of the parabolas Derive the equation of the parabolic arch shown.arrow_forwardRoad Design Roads are often designed with parabolic surfaces to allow rain to drain off. A particular road is 32 feet wide and 0.4 foot higher in the center than it is on the sides (see figure). (a) Write an equation of the parabola with its vertex at the origin that models the road surface. (b) How far from the center of the road is the road surface 0.1 foot lower than the center?arrow_forward
- The receiver of a parabolic satellite dish is at the focus of the parabola (see figure). Write an equation for a cross section of the satellite dish.arrow_forwardSonic boom The position of a sonic boom caused by the faster-than-sound aircraft is one branch of the hyperbola y2x2=25 in the coordinate system shown. How wide is the hyperbola 5 miles from its vertex?arrow_forwardDiscovery and Writing If F is a focus of the ellipse shown and P is any point on the ellipse, use the distance formula to show that the length of FB is acax . Hint: In an ellipse, c2=a2b2 .arrow_forward
- Highway Design Highway engineers use a parabolic curve to design an entrance ramp from a straight street to an interstate highway (see figure). Write an equation of the parabola.arrow_forwardDesign of a suspension bridge The cable between the tower of the suspension bridge shown in the illustration has the shape of a parabola with vertex 15feet above the roadway. Find an equation in standard form of the parabola.arrow_forwardSuspension Bridge Each cable of a suspension bridge is suspended (in the shape of a parabola) between two towers (see figure). (a) Find the coordinates of the focus. (b) Write an equation that models the cables.arrow_forward
- Suspension Bridge Each cable of the Golden Gate Bridge is suspended (in the shape of a parabola) between two towers that are 1280 meters apart. The top of each tower is 152 meters above the roadway. The cables touch the roadway at the midpoint between the towers. (a) Sketch the bridge on a rectangular coordinate system with the cables touching the roadway at the origin. Label the coordinates of the known points. (b) Write an equation that models the cables.arrow_forward?Write the equation of the parabolic arch formed in the foundation of the bridge shown. Write the equation in standard form.arrow_forwardFill in the blanks. The line that passes through the focus and the vertex of a parabola is the of the parabola.arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage LearningBig Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
- Trigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage LearningCollege AlgebraAlgebraISBN:9781305115545Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage LearningAlgebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage Learning
College Algebra (MindTap Course List)
Algebra
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:Cengage Learning
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
Trigonometry (MindTap Course List)
Trigonometry
ISBN:9781337278461
Author:Ron Larson
Publisher:Cengage Learning
College Algebra
Algebra
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:Cengage Learning
Algebra and Trigonometry (MindTap Course List)
Algebra
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:Cengage Learning
What is Ellipse?; Author: Don't Memorise;https://www.youtube.com/watch?v=nzwCInIMlU4;License: Standard YouTube License, CC-BY