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Use a graphing utility to graph the polar equation. Identify the graph. \(r=\frac{4}{1-2 \cos \theta}\)

Short Answer

Expert verified
Using a graphing utility, we can graph given polar equation. Once graphed, by comparing the output to common polar graph shapes, we can identify what kind of graph we have. For this exercise, the result is a type of limaçon, due to the general form of the equation and the graphical representation.

Step by step solution

01

Understand the Polar Equation

Given the polar equation, \(r=\frac{4}{1-2 \cos \theta}\), we see that it represents a mathematical relation between the distance of the point from the origin (r) and the angle \(\theta\) the line connecting the point and origin makes with positive x-axis.
02

Plot the Graph

To plot this equation, we will use a graphing utility like a graphing calculator or software like Desmos. On the x-axis, we denote \(\theta\) and on the y-axis, we denote \(r\). We input the equation, \(r=\frac{4}{1-2 \cos \theta}\) in the graphing utility and plot the polar graph.
03

Identify the Graph

After plotting the equation, we look at the shape that the graph gives. We can compare this with the common types of polar graphs like circles, spirals, rose curves, and lemniscates in order to correctly identify our graph.

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