Calculus 2012 Student Edition (by Finney/Demana/Waits/Kennedy)

4th Edition

ISBN: 9780133178579

Author: Ross L. Finney

Publisher: PEARSON

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Question

Chapter 2.4, Problem 7E

(a)

To determine

To find: The slope of the secants PQ1 , PQ2 , PQ3 and PQ4 , arrange them in a table and also write the unit for the slope.

(a)

Expert Solution

Answer to Problem 7E

The units for the slope are m/sec and the approximate value of slope of the secants is shown in below table:

Secant	Slope
PQ1	43 m/sec
PQ2	46 m/sec
PQ3	50 m/sec
PQ4	50 m/sec

Explanation of Solution

Given information: The below figure shows the distance-time graph for a 1994 Ford Mustang Cobra accelerating from a standstill:

Calculus 2012 Student Edition (by Finney/Demana/Waits/Kennedy), Chapter 2.4, Problem 7E , additional homework tip 1

Calculation:

As shown in the graph the points are Q1(10,225) , Q2(14,375) , Q3(16.5,475) , Q4(18,550) and P(20,650).

The slope of the secant PQ1 can be calculated as:

m=y2−y1x2−x1=650−22520−10=42510=42.5

So, the slope of the secant PQ1 is estimated to 43 m/sec.

The slope of the secant PQ2 can be calculated as:

m=y2−y1x2−x1=650−37520−14=2756=45.83

So, the slope of the secant PQ2 is estimated to 46 m/sec.

The slope of the secant PQ3 can be calculated as:

m=y2−y1x2−x1=650−47520−16.5=1753.5=50

So, the slope of the secant PQ3 is 50 m/sec.

The slope of the secant PQ4 can be calculated as:

m=y2−y1x2−x1=650−55020−18=1002=50

So, the slope of the secant PQ4 is to 50 m/sec.

Therefore, the units for the slope are m/sec and the approximate value of slope of the secant lines is shown in the table below:

Secant	Slope
PQ1	43 m/sec
PQ2	46 m/sec
PQ3	50 m/sec
PQ4	50 m/sec

(b)

To determine

To find: The speed at the point P.

(b)

Expert Solution

Answer to Problem 7E

The speed at the point P is 50 m/sec.

Explanation of Solution

Given information: The below figure shows the distance-time graph for a 1994 Ford Mustang Cobra accelerating from a standstill:

Calculus 2012 Student Edition (by Finney/Demana/Waits/Kennedy), Chapter 2.4, Problem 7E , additional homework tip 2

Calculation:

As calculated in part (a), the slope of the line joining the point nearest to the point P is equal to the speed at point P . The point nearest to the point P is Q4 and the slope of the secant PQ4 is equal to 50 m/sec.

Therefore, the speed at the point P is equal to 50 m/sec.

Chapter 2.4, Problem 6E

Chapter 2.4, Problem 8E

Chapter 2 Solutions

Calculus 2012 Student Edition (by Finney/Demana/Waits/Kennedy)

Ch. 2.1 - Prob. 1QR Ch. 2.1 - Prob. 2QR Ch. 2.1 - Prob. 3QR Ch. 2.1 - Prob. 4QR Ch. 2.1 - Prob. 5QR Ch. 2.1 - Prob. 6QR Ch. 2.1 - Prob. 7QR Ch. 2.1 - Prob. 8QR Ch. 2.1 - Prob. 9QR Ch. 2.1 - Prob. 10QR

Ch. 2.1 - Prob. 1E Ch. 2.1 - Prob. 2E Ch. 2.1 - Prob. 3E Ch. 2.1 - Prob. 4E Ch. 2.1 - Prob. 5E Ch. 2.1 - Prob. 6E Ch. 2.1 - Prob. 7E Ch. 2.1 - Prob. 8E Ch. 2.1 - Prob. 9E Ch. 2.1 - Prob. 10E Ch. 2.1 - Prob. 11E Ch. 2.1 - Prob. 12E Ch. 2.1 - Prob. 13E Ch. 2.1 - Prob. 14E Ch. 2.1 - Prob. 15E Ch. 2.1 - Prob. 16E Ch. 2.1 - Prob. 17E Ch. 2.1 - Prob. 18E Ch. 2.1 - Prob. 19E Ch. 2.1 - Prob. 20E Ch. 2.1 - Prob. 21E Ch. 2.1 - Prob. 22E Ch. 2.1 - Prob. 23E Ch. 2.1 - Prob. 24E Ch. 2.1 - Prob. 25E Ch. 2.1 - Prob. 26E Ch. 2.1 - Prob. 27E Ch. 2.1 - Prob. 28E Ch. 2.1 - Prob. 29E Ch. 2.1 - Prob. 30E Ch. 2.1 - Prob. 31E Ch. 2.1 - Prob. 32E Ch. 2.1 - Prob. 33E Ch. 2.1 - Prob. 34E Ch. 2.1 - Prob. 35E Ch. 2.1 - Prob. 36E Ch. 2.1 - Prob. 37E Ch. 2.1 - Prob. 38E Ch. 2.1 - Prob. 39E Ch. 2.1 - Prob. 40E Ch. 2.1 - Prob. 41E Ch. 2.1 - Prob. 42E Ch. 2.1 - Prob. 43E Ch. 2.1 - Prob. 44E Ch. 2.1 - Prob. 45E Ch. 2.1 - Prob. 46E Ch. 2.1 - Prob. 47E Ch. 2.1 - Prob. 48E Ch. 2.1 - Prob. 49E Ch. 2.1 - Prob. 50E Ch. 2.1 - 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Prob. 1QQ Ch. 2.4 - Prob. 2QQ Ch. 2.4 - Prob. 3QQ Ch. 2.4 - Prob. 4QQ Ch. 2 - Prob. 1RE Ch. 2 - Prob. 2RE Ch. 2 - Prob. 3RE Ch. 2 - Prob. 4RE Ch. 2 - Prob. 5RE Ch. 2 - Prob. 6RE Ch. 2 - Prob. 7RE Ch. 2 - Prob. 8RE Ch. 2 - Prob. 9RE Ch. 2 - Prob. 10RE Ch. 2 - Prob. 11RE Ch. 2 - Prob. 12RE Ch. 2 - Prob. 13RE Ch. 2 - Prob. 14RE Ch. 2 - Prob. 15RE Ch. 2 - Prob. 16RE Ch. 2 - Prob. 17RE Ch. 2 - Prob. 18RE Ch. 2 - Prob. 19RE Ch. 2 - Prob. 20RE Ch. 2 - Prob. 21RE Ch. 2 - Prob. 22RE Ch. 2 - Prob. 23RE Ch. 2 - Prob. 24RE Ch. 2 - Prob. 25RE Ch. 2 - Prob. 26RE Ch. 2 - Prob. 27RE Ch. 2 - Prob. 28RE Ch. 2 - Prob. 29RE Ch. 2 - Prob. 30RE Ch. 2 - Prob. 31RE Ch. 2 - Prob. 32RE Ch. 2 - Prob. 33RE Ch. 2 - Prob. 34RE Ch. 2 - Prob. 35RE Ch. 2 - Prob. 36RE Ch. 2 - Prob. 37RE Ch. 2 - Prob. 38RE Ch. 2 - Prob. 39RE Ch. 2 - Prob. 40RE Ch. 2 - Prob. 41RE Ch. 2 - Prob. 42RE Ch. 2 - Prob. 43RE Ch. 2 - Prob. 44RE Ch. 2 - Prob. 45RE Ch. 2 - Prob. 46RE Ch. 2 - Prob. 47RE Ch. 2 - Prob. 48RE Ch. 2 - Prob. 49RE Ch. 2 - Prob. 50RE Ch. 2 - Prob. 51RE Ch. 2 - Prob. 52RE Ch. 2 - Prob. 53RE Ch. 2 - Prob. 54RE Ch. 2 - Prob. 55RE

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The slope of the secants P Q 1 , P Q 2 , P Q 3 and P Q 4 , arrange them in a table and also write the unit for the slope.

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To find: The slope of the secants PQ1 , PQ2 , PQ3 and PQ4 , arrange them in a table and also write the unit for the slope.

Answer to Problem 7E

Explanation of Solution

To find: The speed at the point P.

Answer to Problem 7E

Explanation of Solution

Chapter 2 Solutions

Additional Math Textbook Solutions