Chapter 1.1, Problem 23E

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8th Edition

James Stewart

ISBN: 9781305270343

Textbook Problem

Temperature readings *T* (in °F) were recorded every two hours from midnight to 2:00 PM in Atlanta on June 4, 2013. The time *t* was measured in hours from midnight.

t |
0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 |

T |
74 | 69 | 68 | 66 | 70 | 78 | 82 | 86 |

(a) Use the readings to sketch a rough graph of *T* as a function of *t*.

(b) Use your graph to estimate the temperature at 9:00 AM.

(a)

To determine

**To sketch:** A rough graph of temperature readings, *T* (in °F) as a function of time, *t* in hours from midnight.

Explanation

Take the time in hours from midnight to 2:00 PM in the *x*-axis and the corresponding temperatures in Fahrenheit in the *y*-axis. Plot the points (0, 74), (2, 69), (4, 68), (6, 66), (8, 70), (10, 78), (12, 82), and (14, 86), and obtain the graph of *T*. The required graph is shown below in Figure 1...

(b)

To determine

**To estimate:** The temperature at 9:00 am, according to the graph.

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