Student Solutions Manual for Stewart/Redlin/Watson's Precalculus: Mathematics for Calculus, 7th
Student Solutions Manual for Stewart/Redlin/Watson's Precalculus: Mathematics for Calculus, 7th
7th Edition
ISBN: 9781305253612
Author: James Stewart, Lothar Redlin, Saleem Watson
Publisher: Cengage Learning
Question
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Chapter 9, Problem 1RCC

(a)

To determine

To explain: The vector in a plane and representation of vector in the coordinate plane.

(a)

Expert Solution
Check Mark

Explanation of Solution

A line segment with a particular direction running from initial point to terminal point is called a vector in the plane. A vector in the plane is denoted by AB , where arrow specify the direction, A is the initial point and B is the terminal point of the vector AB .

The vector v as an ordered pair of real numbers in the coordinate plane is represented by,

v=a1,a2

Where,

a1 is the horizontal component of v

a2 is the vertical component of v

A vector represents a magnitude and a direction.

(b)

To determine

To find: The vector with initial point (2,3) and terminal point (4,10) .

(b)

Expert Solution
Check Mark

Answer to Problem 1RCC

The vector with initial point (2,3) and terminal point (4,10) is 2,7 .

Explanation of Solution

Given:

The initial point is (2,3) and terminal point is (4,10) .

Formula used:

The formula to calculate the vector v in the plane with initial point P(x1,y1) and terminal point Q(x2,y2) is,

v=x2x1,y2y1 (1)

Calculation:

Substitute 2 for x1 , 4 for x2 ,3 for y1 ,10 for y2 in equation (1).

v=42,103v=2,7

Thus, the vector with initial point (2,3) and terminal point (4,10) is 2,7 .

(c)

To determine

The terminal point of the vector v and sketch its several representations.

(c)

Expert Solution
Check Mark

Answer to Problem 1RCC

The terminal point of the vector v is 3,2 as shown in the Figure (1).

Explanation of Solution

Given:

The vector v=2,1 and the initial point is P(1,1) .

Calculation:

Section (a):

The terminal point of v be (x,y) .

Substitute x for x2 , 1 for x1 , y for y2 ,1 for y1 , 2,1 for v in equation (1).

2,1=x1,y1

Compare both sides,

x1=2andy1=1x=2+1andy=1+1x=3andy=2

Thus, the terminal point of the vector v is 3,2 .

Section (b):

Draw the graph of vector as shown below,

Student Solutions Manual for Stewart/Redlin/Watson's Precalculus: Mathematics for Calculus, 7th, Chapter 9, Problem 1RCC , additional homework tip  1

Figure (1)

Thus, Figure (1) shows various representations of the vector v with several initial points.

(d)

To determine

The definition of magnitude of vector and the value of the vector w=3,4 .

(d)

Expert Solution
Check Mark

Explanation of Solution

Calculation:

The length of the line segment is called the magnitude of the vector and it is denoted by |AB| . The magnitude of a vector w=a1,a2 is,

|w|=a12+a22 (1)

The magnitude of the vector w=3,4 is calculated as,

|w|=32+42=9+16=25=5

Thus, magnitude of vector w=3,4 is 5.

(e)

To determine

The vectors i and j and express the vector in terms of i and j .

(e)

Expert Solution
Check Mark

Explanation of Solution

Calculation:

A vector of length 1 is called a unit vector. The vectors i and j are two useful unit vectors defined by,

v=a1,a2=a1i+a2j

The vector v=5,9 is expressed in terms of vectors i and j as,

v=5i+9j

Thus, the vector v=5,9 in terms of i and j is v=5i+9j .

(f)

To determine

The direction θ of vector v and the coordinates of v in terms of its length and direction and the figure to illustrate the answer.

(f)

Expert Solution
Check Mark

Explanation of Solution

Calculation:

The smallest positive angle in standard position formed by the positive x-axis and the vector v is known as the direction of v and it is denoted by θ .

The vector v=a1,a2 has the coordinates in terms of length and direction as,

a1=|v|cosθ (1)

And

a2=|v|sinθ (2)

Where,

a1 is the horizontal component

a2 is the vertical component.

The vector v is expressed as,

v=|v|cosθi+|v|sinθj (5)

The graph for the above equation is,

Student Solutions Manual for Stewart/Redlin/Watson's Precalculus: Mathematics for Calculus, 7th, Chapter 9, Problem 1RCC , additional homework tip  2

Figure (2)

Thus, Figure (2) shows the graph of the coordinates of a vector in terms of length and direction.

(g)

To determine

To find: The vector v in terms of its coordinates.

(g)

Expert Solution
Check Mark

Answer to Problem 1RCC

The vector v in terms of its coordinates is v=532,52 .

Explanation of Solution

Given:

The length |v|=5 and direction θ=π/6 .

Calculation:

The vector v=a1,a2 has the coordinates in terms of length and direction as,

a1=|v|cosθ (1)

And

a2=|v|sinθ (2)

Substitute 5 for |v| , π/6 for θ in equation (1) and equation (2).

a1=5×cos(π/6)=5×32a1=532

And

a2=5×sin(π/6)=5×12a2=52

Substitute 532 for a1 , 52 for a2 in v=a1,a2 .

v=532,52

Thus, the coordinates of the vector v is 532,52 .

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Chapter 9 Solutions

Student Solutions Manual for Stewart/Redlin/Watson's Precalculus: Mathematics for Calculus, 7th

Ch. 9.1 - Prob. 11ECh. 9.1 - Prob. 12ECh. 9.1 - Prob. 13ECh. 9.1 - Prob. 14ECh. 9.1 - Prob. 15ECh. 9.1 - Prob. 16ECh. 9.1 - Prob. 17ECh. 9.1 - Prob. 18ECh. 9.1 - Prob. 19ECh. 9.1 - Prob. 20ECh. 9.1 - Prob. 21ECh. 9.1 - Sketching Vectors Sketch the given vector with...Ch. 9.1 - Prob. 23ECh. 9.1 - Prob. 24ECh. 9.1 - Prob. 25ECh. 9.1 - Prob. 26ECh. 9.1 - Writing Vectors in Terms of i and j Write the...Ch. 9.1 - Prob. 28ECh. 9.1 - Prob. 29ECh. 9.1 - Writing Vectors in Terms of i and j Write the...Ch. 9.1 - Operations with Vectors Find 2u, 3v, u + v, and 3u...Ch. 9.1 - Prob. 32ECh. 9.1 - Prob. 33ECh. 9.1 - Prob. 34ECh. 9.1 - Prob. 35ECh. 9.1 - Prob. 36ECh. 9.1 - Prob. 37ECh. 9.1 - Prob. 38ECh. 9.1 - Prob. 39ECh. 9.1 - Prob. 40ECh. 9.1 - Prob. 41ECh. 9.1 - Prob. 42ECh. 9.1 - Prob. 43ECh. 9.1 - Prob. 44ECh. 9.1 - Prob. 45ECh. 9.1 - Prob. 46ECh. 9.1 - Prob. 47ECh. 9.1 - Prob. 48ECh. 9.1 - Prob. 49ECh. 9.1 - Prob. 50ECh. 9.1 - Prob. 51ECh. 9.1 - Prob. 52ECh. 9.1 - Prob. 53ECh. 9.1 - Prob. 54ECh. 9.1 - Velocity A river flows due south at 3 mi/h. A...Ch. 9.1 - Velocity Suppose that in Exercise 55 the current...Ch. 9.1 - Velocity The speed of an airplane is 300 mi/h...Ch. 9.1 - Velocity A migrating salmon heads in the direction...Ch. 9.1 - Prob. 59ECh. 9.1 - Prob. 60ECh. 9.1 - True Velocity of a Jet Find the true speed and...Ch. 9.1 - True Velocity of a Jet In what direction should...Ch. 9.1 - Prob. 63ECh. 9.1 - Velocity of a Boat The boater in Exercise 63 wants...Ch. 9.1 - Prob. 65ECh. 9.1 - Velocity A woman walks due west on the deck of an...Ch. 9.1 - Equilibrium of Forces The forces F1, F2, , Fn...Ch. 9.1 - Prob. 68ECh. 9.1 - Prob. 69ECh. 9.1 - Equilibrium of Forces The forces F1, F2, , Fn...Ch. 9.1 - Equilibrium of Forces The forces F1, F2, , Fn...Ch. 9.1 - Equilibrium of Forces The forces F1, F2, , Fn...Ch. 9.1 - Equilibrium of Tensions A 100-lb weight hangs from...Ch. 9.1 - Equilibrium of Tensions The cranes in the figure...Ch. 9.1 - DISCUSS: Vectors That Form a Polygon Suppose that...Ch. 9.2 - Prob. 1ECh. 9.2 - Prob. 2ECh. 9.2 - Prob. 3ECh. 9.2 - Prob. 4ECh. 9.2 - Prob. 5ECh. 9.2 - Prob. 6ECh. 9.2 - Prob. 7ECh. 9.2 - Prob. 8ECh. 9.2 - Prob. 9ECh. 9.2 - Prob. 10ECh. 9.2 - Prob. 11ECh. 9.2 - Prob. 12ECh. 9.2 - Prob. 13ECh. 9.2 - Prob. 14ECh. 9.2 - Prob. 15ECh. 9.2 - Prob. 16ECh. 9.2 - Prob. 17ECh. 9.2 - Prob. 18ECh. 9.2 - Prob. 19ECh. 9.2 - Perpendicular Vectors? Determine whether the given...Ch. 9.2 - Dot Products Find the indicated quantity, assuming...Ch. 9.2 - Prob. 22ECh. 9.2 - Prob. 23ECh. 9.2 - Dot Products Find the indicated quantity, assuming...Ch. 9.2 - Prob. 25ECh. 9.2 - Prob. 26ECh. 9.2 - Prob. 27ECh. 9.2 - Prob. 28ECh. 9.2 - Prob. 29ECh. 9.2 - Prob. 30ECh. 9.2 - Prob. 31ECh. 9.2 - Prob. 32ECh. 9.2 - Prob. 33ECh. 9.2 - Prob. 34ECh. 9.2 - Prob. 35ECh. 9.2 - Prob. 36ECh. 9.2 - Prob. 37ECh. 9.2 - Prob. 38ECh. 9.2 - Prob. 39ECh. 9.2 - Prob. 40ECh. 9.2 - Prob. 41ECh. 9.2 - Prob. 42ECh. 9.2 - Projection Show that projv u and u projv u are...Ch. 9.2 - Projection Evaluate v projv u.Ch. 9.2 - Prob. 45ECh. 9.2 - Prob. 46ECh. 9.2 - Prob. 47ECh. 9.2 - Work A car drives 500 ft on a road that is...Ch. 9.2 - Prob. 49ECh. 9.2 - Prob. 50ECh. 9.2 - Prob. 51ECh. 9.2 - Prob. 52ECh. 9.2 - Prob. 53ECh. 9.3 - The distance between the point P(x1, y1, z1) and...Ch. 9.3 - Prob. 3ECh. 9.3 - Prob. 4ECh. 9.3 - Prob. 5ECh. 9.3 - Prob. 6ECh. 9.3 - Prob. 7ECh. 9.3 - Prob. 8ECh. 9.3 - Prob. 9ECh. 9.3 - Prob. 10ECh. 9.3 - Prob. 11ECh. 9.3 - Prob. 12ECh. 9.3 - Prob. 13ECh. 9.3 - Prob. 14ECh. 9.3 - Prob. 15ECh. 9.3 - Prob. 16ECh. 9.3 - Center and Radius of a Sphere Show that the...Ch. 9.3 - Prob. 18ECh. 9.3 - Prob. 19ECh. 9.3 - Trace of a Sphere In these exercises we find the...Ch. 9.3 - Spherical Water Tank A water tank is in the shape...Ch. 9.3 - Prob. 22ECh. 9.3 - Prob. 23ECh. 9.3 - Prob. 24ECh. 9.4 - A vector in three dimensions can be written in...Ch. 9.4 - Prob. 2ECh. 9.4 - Prob. 3ECh. 9.4 - Prob. 4ECh. 9.4 - Prob. 5ECh. 9.4 - Prob. 6ECh. 9.4 - Prob. 7ECh. 9.4 - Prob. 8ECh. 9.4 - Prob. 9ECh. 9.4 - Prob. 10ECh. 9.4 - Prob. 11ECh. 9.4 - Prob. 12ECh. 9.4 - Prob. 13ECh. 9.4 - Prob. 14ECh. 9.4 - Prob. 15ECh. 9.4 - Prob. 16ECh. 9.4 - Prob. 17ECh. 9.4 - Prob. 18ECh. 9.4 - Prob. 19ECh. 9.4 - Prob. 20ECh. 9.4 - Prob. 21ECh. 9.4 - Prob. 22ECh. 9.4 - Prob. 23ECh. 9.4 - Prob. 24ECh. 9.4 - Prob. 25ECh. 9.4 - Prob. 26ECh. 9.4 - Prob. 27ECh. 9.4 - Prob. 28ECh. 9.4 - Prob. 29ECh. 9.4 - Prob. 30ECh. 9.4 - Prob. 31ECh. 9.4 - Prob. 32ECh. 9.4 - Prob. 33ECh. 9.4 - Angle Between Two Vectors Find the angle between u...Ch. 9.4 - Prob. 35ECh. 9.4 - Prob. 36ECh. 9.4 - Prob. 37ECh. 9.4 - Prob. 38ECh. 9.4 - Direction Angles of a Vector Find the direction...Ch. 9.4 - Direction Angles of a Vector Find the direction...Ch. 9.4 - Prob. 41ECh. 9.4 - Prob. 42ECh. 9.4 - Prob. 43ECh. 9.4 - Prob. 44ECh. 9.4 - Prob. 45ECh. 9.4 - Prob. 46ECh. 9.4 - Parallel Vectors Two nonzero vectors are parallel...Ch. 9.4 - Prob. 48ECh. 9.4 - Prob. 49ECh. 9.4 - Prob. 50ECh. 9.4 - Prob. 51ECh. 9.5 - The cross product of the vectors u = a1, a2, a3...Ch. 9.5 - Prob. 2ECh. 9.5 - Prob. 3ECh. 9.5 - Prob. 4ECh. 9.5 - Prob. 5ECh. 9.5 - Prob. 6ECh. 9.5 - Prob. 7ECh. 9.5 - Prob. 8ECh. 9.5 - Prob. 9ECh. 9.5 - Prob. 10ECh. 9.5 - Prob. 11ECh. 9.5 - Orthogonal Vectors Two vectors u and v are given....Ch. 9.5 - Prob. 13ECh. 9.5 - Prob. 14ECh. 9.5 - Prob. 15ECh. 9.5 - Prob. 16ECh. 9.5 - Prob. 17ECh. 9.5 - Prob. 18ECh. 9.5 - Prob. 19ECh. 9.5 - Prob. 20ECh. 9.5 - Area of a Parallelogram Find the area of the...Ch. 9.5 - Prob. 22ECh. 9.5 - Prob. 23ECh. 9.5 - Prob. 24ECh. 9.5 - Prob. 25ECh. 9.5 - Prob. 26ECh. 9.5 - Prob. 27ECh. 9.5 - Prob. 28ECh. 9.5 - Prob. 29ECh. 9.5 - Prob. 30ECh. 9.5 - Prob. 31ECh. 9.5 - Prob. 32ECh. 9.5 - Prob. 33ECh. 9.5 - Prob. 34ECh. 9.5 - Prob. 35ECh. 9.5 - Rubiks Tetrahedron Rubiks Cube, a puzzle craze of...Ch. 9.5 - Prob. 37ECh. 9.6 - A line in space is described algebraically by...Ch. 9.6 - Prob. 2ECh. 9.6 - Prob. 3ECh. 9.6 - Prob. 4ECh. 9.6 - Prob. 5ECh. 9.6 - Prob. 6ECh. 9.6 - Prob. 7ECh. 9.6 - Prob. 8ECh. 9.6 - Prob. 9ECh. 9.6 - Prob. 10ECh. 9.6 - Prob. 11ECh. 9.6 - Equations of Lines Find parametric equations for...Ch. 9.6 - Prob. 13ECh. 9.6 - Prob. 14ECh. 9.6 - Prob. 15ECh. 9.6 - Prob. 16ECh. 9.6 - Prob. 17ECh. 9.6 - Prob. 18ECh. 9.6 - Prob. 19ECh. 9.6 - Prob. 20ECh. 9.6 - Prob. 21ECh. 9.6 - Prob. 22ECh. 9.6 - Prob. 23ECh. 9.6 - Prob. 24ECh. 9.6 - Prob. 25ECh. 9.6 - Prob. 26ECh. 9.6 - Prob. 27ECh. 9.6 - Equations of Lines A description of a line is...Ch. 9.6 - Prob. 29ECh. 9.6 - Prob. 30ECh. 9.6 - Prob. 31ECh. 9.6 - Equations of Planes A description of a plane is...Ch. 9.6 - Prob. 33ECh. 9.6 - Prob. 34ECh. 9.6 - DISCOVER: Intersection of a Line and a Plane A...Ch. 9.6 - Prob. 36ECh. 9.6 - Prob. 37ECh. 9 - Prob. 1RCCCh. 9 - Prob. 2RCCCh. 9 - Prob. 3RCCCh. 9 - (a) Describe the three-dimensional coordinate...Ch. 9 - Prob. 5RCCCh. 9 - Prob. 6RCCCh. 9 - Prob. 7RCCCh. 9 - Prob. 8RCCCh. 9 - Prob. 9RCCCh. 9 - Prob. 10RCCCh. 9 - Prob. 1RECh. 9 - Prob. 2RECh. 9 - Prob. 3RECh. 9 - Prob. 4RECh. 9 - Prob. 5RECh. 9 - Prob. 6RECh. 9 - Prob. 7RECh. 9 - Prob. 8RECh. 9 - Prob. 9RECh. 9 - Prob. 10RECh. 9 - Prob. 11RECh. 9 - True Velocity of a Plane An airplane heads N 60 E...Ch. 9 - Prob. 13RECh. 9 - Prob. 14RECh. 9 - Prob. 15RECh. 9 - Prob. 16RECh. 9 - Prob. 17RECh. 9 - Prob. 18RECh. 9 - Prob. 19RECh. 9 - Prob. 20RECh. 9 - Prob. 21RECh. 9 - Prob. 22RECh. 9 - Prob. 23RECh. 9 - 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A man heads...Ch. 9 - Prob. 5TCh. 9 - Prob. 6TCh. 9 - Prob. 7TCh. 9 - Calculate the given quantity if u = i + j 2k v =...Ch. 9 - Find two unit vectors that are perpendicular to...Ch. 9 - (a) Find a vector perpendicular to the plane that...Ch. 9 - Prob. 11TCh. 9 - Prob. 1PCh. 9 - Prob. 2PCh. 9 - Prob. 3PCh. 9 - Prob. 4PCh. 9 - Prob. 5PCh. 9 - Prob. 6PCh. 9 - Prob. 7PCh. 9 - Prob. 8PCh. 9 - Prob. 9PCh. 9 - Prob. 10PCh. 9 - Prob. 11PCh. 9 - Prob. 12PCh. 9 - Prob. 13PCh. 9 - Prob. 14PCh. 9 - Prob. 15PCh. 9 - Prob. 16PCh. 9 - Prob. 17PCh. 9 - Match the vector field F with the graphs labeled...Ch. 9 - Prob. 19P
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