/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 43 You may wish to review Section 1... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

You may wish to review Section 1.2 before solving Exercises \(39-56\) The hyperbola \(\left(x^{2} / 16\right)-\left(y^{2} / 9\right)=1\) is shifted 2 units to the right to generate the hyperbola $$ \frac{(x-2)^{2}}{16}-\frac{y^{2}}{9}=1 $$ $$ \begin{array}{l}{\text { a. Find the center, foci, vertices, and asymptotes of the new }} \\ {\text { hyperbola. }} \\ {\text { b. Plot the new center, foci, vertices, and asymptotes, and sketch }} \\ {\text { in the hyperbola. }}\end{array} $$

Short Answer

Expert verified
a. Center: \( (2,0) \); vertices: \( (6,0), (-2,0) \); foci: \( (7,0), (-3,0) \); asymptotes: \( y = \frac{3}{4}(x-2), y = -\frac{3}{4}(x-2) \). b. Graph these elements and sketch the hyperbola.

Step by step solution

01

Reviewing the standard form

The standard form of a hyperbola with a horizontal transverse axis is given by \( \frac{(x-h)^2}{a^2} - \frac{(y-k)^2}{b^2} = 1 \). Here, the center of the hyperbola is at point \((h, k)\), \(a\) is the distance from the center to each vertex along the x-axis, and \(b\) is the distance from the center to each co-vertex along the y-axis.
02

Identify the center

Comparing the given hyperbola equation \( \frac{(x-2)^2}{16} - \frac{y^2}{9} = 1 \) with the standard form, we find \(h = 2\) and \(k = 0\). Thus, the center of the hyperbola is \((2, 0)\).
03

Determine vertices

The vertices of the hyperbola are located along the transverse axis at distances of \(a\) from the center. Since \(a^2=16\), \(a=4\). Thus, the vertices are \((2+4, 0) = (6, 0)\) and \((2-4, 0) = (-2, 0)\).
04

Locate the foci

The foci are found at distances \(c\) from the center, where \(c\) is given by \(c^2 = a^2 + b^2\). Here, \(c^2 = 16 + 9 = 25\), so \(c = 5\). Therefore, the foci are \((2+5, 0) = (7, 0)\) and \((2-5, 0) = (-3, 0)\).
05

Find the asymptotes

The equations of the asymptotes for the hyperbola \( \frac{(x-h)^2}{a^2} - \frac{(y-k)^2}{b^2} = 1 \) are \( y = k \pm \frac{b}{a}(x-h) \). Substituting in \( h = 2 \), \( k = 0 \), \( a = 4 \) and \( b = 3 \), the asymptotes are \( y = \frac{3}{4}(x - 2) \) and \( y = -\frac{3}{4}(x - 2) \).
06

Sketch the graph

To sketch the hyperbola, plot the center \((2,0)\), vertices \((6,0)\) and \((-2,0)\), and foci \((7,0)\) and \((-3,0)\). Draw the asymptotes as slant lines passing through the center with slopes \(\frac{3}{4}\) and \(-\frac{3}{4}\). Finally, draw the hyperbola's two branches opening to the left and right, ensuring they approach the asymptotes as they extend outward.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Hyperbola
A hyperbola is one of the four main types of conic sections, which are the curves formed by intersecting a plane with a cone. Unlike a circle or ellipse, a hyperbola consists of two separate branches. These branches resemble curved lines that mirror each other across center.
A hyperbola with a horizontal transverse axis is described by the standard form equation: \[\frac{(x-h)^2}{a^2} - \frac{(y-k)^2}{b^2} = 1\] Here,
  • \(h\) and \(k\) are the coordinates of the center,
  • \(a\) and \(b\) are the distances from the center to the vertices and co-vertices, respectively.
The equation provided, \(\frac{(x-2)^2}{16} - \frac{y^2}{9} = 1\), suggests a hyperbola with its center shifted 2 units to the right from the origin, to the point \((2, 0)\). In this setup, the transverse axis lies horizontally along the x-axis.
Foci and Vertices
Finding the foci and vertices of a hyperbola is crucial for understanding its shape and behavior. The vertices of the hyperbola are the points where the hyperbola crosses the transverse axis. For the equation \(\frac{(x-2)^2}{16} - \frac{y^2}{9} = 1\),
  • \(a^2 = 16\), which means \(a = 4\).
Thus, the vertices from the center \((2, 0)\) are at points \((6, 0)\) and \((-2, 0)\).
The foci are located further from the center than the vertices, providing another crucial indicator of the hyperbola's shape. To find the distance \(c\) to the foci from the center, use the relation: \[ c^2 = a^2 + b^2 \]Given \(b^2 = 9\) as well, we have \(c^2 = 25\), leading to \(c = 5\). Therefore, the foci are located at the coordinates \((7, 0)\) and \((-3, 0)\).
These markers help in graphing the hyperbola and understanding its dimensions.
Asymptotes
Asymptotes of a hyperbola are lines that the branches of the hyperbola approach but never touch. They provide a "guideline" for drawing the hyperbola accurately. These lines extend straight through the center and depict the general direction the hyperbola will open.
The formula for asymptotes of a horizontal hyperbola is: \[y = k \pm \frac{b}{a}(x-h)\]For our specific hyperbola \(\frac{(x-2)^2}{16} - \frac{y^2}{9} = 1\), we plug in \(h = 2\), \(k = 0\), \(a = 4\), and \(b = 3\) into this equation:
  • The first asymptote: \(y = \frac{3}{4}(x - 2)\)
  • The second asymptote: \(y = -\frac{3}{4}(x - 2)\)
These lines cross at the center and extend in opposite diagonal directions. When sketching the hyperbola, the branches should become increasingly close to these asymptotes but never intersect them. The steepness and direction of these asymptotes give insight into how 'wide' or 'narrow' the hyperbola will appear on a graph.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Use a CAS to perform the following steps for the given curve over the closed interval. a. Plot the curve together with the polygonal path approximations for \(n=2,4,8\) partition points over the interval. (See Figure \(11.15 . )\) b. Find the corresponding approximation to the length of the curve by summing the lengths of the line segments. c. Evaluate the length of the curve using an integral. Compare your approximations for \(n=2,4,8\) with the actual length given by the integral. How does the actual length compare with the approximations as \(n\) increases? Explain your answer. $$ x=t-\cos t, \quad y=1+\sin t, \quad-\pi \leq t \leq \pi $$

Exercises \(25-28\) give the eccentricities and the vertices or foci of hyperbolas centered at the origin of the \(x y\) -plane. In each case, find the hyperbola's standard-form equation in Cartesian coordinates. $$\begin{array}{l}{\text { Eccentricity: } 1.25} \\ {\text { Foci: }(0, \pm 5)}\end{array}$$

If you have a parametric equation grapher, graph the equations over the given intervals. Ellipse \(\quad x=4 \cos t, \quad y=2 \sin t, \quad\) over $$\begin{array}{l}{\text { a. } 0 \leq t \leq 2 \pi} \\ {\text { b. } 0 \leq t \leq \pi} \\ {\text { c. }-\pi / 2 \leq t \leq \pi / 2}\end{array}$$

A cone The line segment joining the origin to the point \((h, r)\) is revolved about the \(x\) -axis to generate a cone of height \(h\) and base radius \(r .\) Find the cone's surface area with the parametric equations \(x=h t, y=r t, 0 \leq t \leq 1 .\) Check your result with the geometry formula: Area \(=\pi r(\) slant height\().\)

Exercises \(35-38\) give information about the foci, vertices, and asymptotes of hyperbolas centered at the origin of the \(x y\) -plane. In each case, find the hyperbola's standard-form equation from the information given. $$ \begin{array}{l}{\text { Foci: }( \pm 2,0)} \\ {\text { Asymptotes: } y=\pm \frac{1}{\sqrt{3}} x}\end{array} $$

See all solutions

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.