Chapter 15.7, Problem 7E

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8th Edition

James Stewart

ISBN: 9781285741550

Textbook Problem

Identify the surface whose equation is given.

**7**. *r*^{2} + *z*^{2} = 4

To determine

**To identify:** The surface of the equation

Explanation

**Given:**

The equation

**Formula used:**

The formula to find *r* from the rectangular coordinates

**Calculation:**

From the formula mentioned above, it is obtained that

Therefore, the given equation becomes

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