   Chapter 10, Problem 119RE

Chapter
Section
Textbook Problem

# Finding a Polar Equation In Exercises 119-122, find a polar equation Tor the conic with its focus at the pole and the Risen eccentricity and directrix. (For convenience, the equation for the directrix is given in rectangular form.)Conic Eccentricity DirectrixParabola e = 1 r = 5

To determine

To calculate: The polar equation for the parabola whose focus is at the pole, and its e=1 with directrix at x=4.

Explanation

Given:

The eccentricity of the parabola is e=1 and directrix is x=4.

Formula used:

The polar equation for the conic where the vertical directrix is to the right of the pole is given by,

r=ed1+ecosθ, where e is the eccentricity and d is the shortest distance from pole to the directrix.

Calculation:

Consider the equation of the directrix, x=4.

Now, x=4 is a vertical line with the distance of 4 units from the pole

### Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

#### The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

#### In Exercises 5-8, solve for x. 3x2x224x=0

Calculus: An Applied Approach (MindTap Course List)

#### Sometimes, Always, or Never: If c is a critical number, then f′(c) = 0.

Study Guide for Stewart's Single Variable Calculus: Early Transcendentals, 8th

#### The area of the region at the right is:

Study Guide for Stewart's Multivariable Calculus, 8th

#### Find each value of x. log36x=-12

College Algebra (MindTap Course List) 