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study help
mathematics
precalculus
Precalculus Concepts Through Functions A Unit Circle Approach To Trigonometry 5th Edition Michael Sullivan - Solutions
Problems 133 – 142. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Write the function that is finally graphed if the following transformations are applied in order to
Problems 133 – 142. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Find c so the points (2, c) and (−1, 4) are on a line perpendicular to 2 x − y = 5.
In Problems 11–22, draw each angle in standard position. 21m 4
In Problems 35–46, convert each angle in radians to degrees. π 3
Problems 133 – 142. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Find the difference quotient of f (x) = 2x3 − 5.
Problems 133 – 142. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Multiply: (3x − 2)3
In Problems 11–22, draw each angle in standard position.540°
In Problems 35–46, convert each angle in radians to degrees. 9п 2
In Problems 35–46, convert each angle in radians to degrees. 5п П 6
In Problems 35–46, convert each angle in radians to degrees. 4π
In Problems 35–46, convert each angle in radians to degrees. 2п 3
In Problems 35–46, convert each angle in radians to degrees. 5п 12
In Problems 35–46, convert each angle in radians to degrees. П 2
In Problems 35–46, convert each angle in radians to degrees. 一个
In Problems 35–46, convert each angle in radians to degrees. 20
In Problems 35–46, convert each angle in radians to degrees. 17п 15
In Problems 23–34, convert each angle in degrees to radians. Express your answer as a multiple of π.495°
In Problems 23–34, convert each angle in degrees to radians. Express your answer as a multiple of π.540°
In Problems 23–34, convert each angle in degrees to radians. Express your answer as a multiple of π.270°
In Problems 23–34, convert each angle in degrees to radians. Express your answer as a multiple of π.−240°
In Problems 35–46, convert each angle in radians to degrees. Зп 4
Problems 119–128. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Is the function even, odd, or neither? f(x) = = 5x² - 3x4 3√x
In Problems 47–52, convert each angle in degrees to radians. Express your answer in decimal form, rounded to two decimal places.17°
In Problems 47–52, convert each angle in degrees to radians. Express your answer in decimal form, rounded to two decimal places.73°
In Problems 47–52, convert each angle in degrees to radians. Express your answer in decimal form, rounded to two decimal places.−40°
In Problems 47–52, convert each angle in degrees to radians. Express your answer in decimal form, rounded to two decimal places.−51°
Problems 135 and 136 use the following discussion: The Richter scale is one way of converting seismographic readings into numbers that provide an easy reference for measuring the magnitude M of an earthquake. All earthquakes are compared to a zero-level earthquake whose seismographic reading
In Problems 47–52, convert each angle in degrees to radians. Express your answer in decimal form, rounded to two decimal places.125°
Problems 135 and 136 use the following discussion: The Richter scale is one way of converting seismographic readings into numbers that provide an easy reference for measuring the magnitude M of an earthquake. All earthquakes are compared to a zero-level earthquake whose seismographic reading
Problems 119–128. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Solve: |4 x + 1| − 9 < 23
Problems 119–128. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Find the vertex of f (x) = −1/2 x2 +4 x + 5, and determine if the graph is concave up or concave
Problems 119–128. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Find the center and radius of the circle x2 − 10x + y2 + 4y = 35
The function D(h) = 5e−0.4h. can be used to find the number of milligrams D of a certain drug that is in a patient’s bloodstream h hours after the drug was administered. When the number of milligrams reaches 2, the drug is to be administered again. What is the time between injections?
Problems 119–128. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Find the average rate of change f (x) = x3 from −1 to 3.
Problems 131–134 use the following discussion: The loudness L(x), measured in decibels (dB), of a sound of intensity x, measured in watts per square meter, is defined as L(x) = 10 log x/I0, where I0 = 10−12 watt per square meter is the least intense sound that a human ear can detect. Determine
Problems 131–134 use the following discussion: The loudness L(x), measured in decibels (dB), of a sound of intensity x, measured in watts per square meter, is defined as L(x) = 10 log x/I0, where I0 = 10−12 watt per square meter is the least intense sound that a human ear can detect. Determine
Problems 131–134 use the following discussion: The loudness L(x), measured in decibels (dB), of a sound of intensity x, measured in watts per square meter, is defined as L(x) = 10 log x/I0, where I0 = 10−12 watt per square meter is the least intense sound that a human ear can detect. Determine
Problems 145–154. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus. For f(x) = x³, find f(x) = f(2) x - 2
Problems 131–134 use the following discussion: The loudness L(x), measured in decibels (dB), of a sound of intensity x, measured in watts per square meter, is defined as L(x) = 10 log x/I0, where I0 = 10−12 watt per square meter is the least intense sound that a human ear can detect. Determine
Problems 145–154. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Factor completely: (x + 5)¹.7(x-3)6+ (x-3)7.4(x + 5)³
There is an infamous problem from mathematics that attempts to quantify the number of potential mates one should date before choosing one’s “true love.” The function L(x) = −x ln x. represents the probability of finding the ideal mate after rejecting the first x proportion of
Solve: log6 (log2 x) = 1
Solve: log2 [log4 ( log3 x)] = 0
Solve: log3 92x+3 = x2 + 1
In 2020, the world was exposed to a novel coronavirus called Covid-19. The virus resulted in a pandemic throughout many countries. In the United States, the number of individuals infected with Covid-19 grew rapidly in the early stages of the disease reaching the country. The data below represent
In the definition of the logarithmic function, the base a is not allowed to equal 1. Why?
The data in the table below represent annual revenue of Tesla, Inc. from 2010 to 2021.(a) Using a graphing utility, draw a scatter plot of the data using 0 for 2010, 1 for 2011, and so on, as the independent variable.(b) Using a graphing utility, build an exponential model from the data.(c) Express
Problems 145–154. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Find the real zeros of g(x) = 4x4 − 37x2 + 9. What are the x-intercepts of the graph of g?
If f (x) = x + 2/x − 2 and g(x) = 2x + 5, find: (a) fog and state its domain (b) (gof)(-2) (c) (fog)(-2)
Problems 145–154. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Find the average rate of change of f (x) = 9x from 1/2 to 1.
Problems 145–154. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Use the Intermediate Value Theorem to show that the function f (x) = 4x3 − 2x2 − 7 has a real
Answers are given at the end of these exercises. Solve the inequality: x - 1 x + 4 > 0
Problems 145–154. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.A complex polynomial function f of degree 4 with real coefficients has the zeros −1, 2, and 3 −
Determine whether the function is one-to-one. (a) y = 4x2 + 3 (b) y = √x + 3-5
Problems 145–154. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Solve: 2x2 − 7x − 1 = 0
Problems 145–154. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Find an equation of the line that contains the points (0, 1) and (8, −4). Write the equation in
Problems 145–154. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Solve: |2x + 17| = 45
Problems 145–154. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.The relationship between the height H of an adult female and the length x of her tibia, in
In Problems 1 – 3, for each pair of functions f and g, find:(a) (f º g)(2)(b) (g º f )(−2)(c) (f º f)(4)(d) (g º g)(−1) f(x) = √√√x + 2; g(x) = 2x² + 1
What is the formula for the circumference C of a circle of radius r ? What is the formula for the area A of a circle of radius r ?
Answers are given at the end of these exercises.43 = _____; 82/3 = ______; 3−2 = _____.
Solve x2 − 7x − 30 = 0.
For the function f (x) = 2x2 − 3x + 1, find:(a) f (3)(b) f (−x)(c) f (x + h)
Solve (x + 3)2 − 4(x + 3) + 3 = 0.
Open the “Logarithmic Functions” interactive figure, which is available in the Video & Resource Library of MyLab Math (under Interactive Figures) or at bit.ly/3raFUGB.(a) The interactive figure shows the graph of f (x) = c · loga ( x − h) + k. Set the values of c to 1, h to 0, and k to
Find the inverse ofand check your answer. State the domain and the range of f and f −1. f(x) = 2 3x - 5
The data in the table below represent the percentage of patients who have survived after diagnosis of advanced-stage breast cancer at 6-month intervals of time.(a) Using a graphing utility, draw a scatter plot of the data with time after diagnosis as the independent variable.(b) Using a graphing
Approximate the solution(s) to x3 = x2 − 5 using a graphing utility.
In Problems 1 – 3, for each pair of functions f and g, find:(a) (f º g)(2)(b) (g º f )(−2)(c) (f º f)(4)(d) (g º g)(−1)f (x) = e x ; g(x) = 3x − 2
In Problems 11–14, each function is one-to-one. Find the inverse of each function and check your answer. Find the domain and range of f and f −1. f(x) = 1 x-1
In Problems 5 – 44, solve each logarithmic equation. Express irrational solutions in exact form. log₂|x7| 4
In Problems 12 and 13, for each function f:(a) Find the domain of f.(b) Graph f.(c) From the graph of f, find the range and any asymptotes.(d) Find f −1, the inverse of f.(e) Find the domain and the range of f −1.(f) Graph f −1. f(x) = 1 log5 (x - 2)
The data below represent world population. An ecologist is interested in building a model that describes the world population.(a) Using a graphing utility, draw a scatter plot of the data using years since 2001 as the independent variable and population as the dependent variable.(b) Using a
In Problems 5 – 44, solve each logarithmic equation. Express irrational solutions in exact form. log, (3x1) = 2
The data in the table below represent the U.S. online advertising revenues for the years 2005–2017.(a) Using a graphing utility, draw a scatter plot of the data using 0 for 2005, 1 for 2006, and so on as the independent variable, and online advertising revenue as the dependent variable.(b) Based
True or False In (x + 3) In (2x) = In(x + 3) In(2x)
In Problems 9 and 10, verify that the functions f and g are inverses of each other by showing that f (g( x)) = x and g( f (x)) = x. Give any values of x that need to be excluded from the domain of f and the domain of g. f(x) = 5x - 10: g(x) = x + 2
In Problems 5 – 44, solve each logarithmic equation. Express irrational solutions in exact form. log4(x + 12) = log4
True or False The graph of f (x) = loga x, where a > 0 and a ≠ 1, has an x-intercept equal to 1 and no y-intercept.
Open the “Exponential Functions” interactive figure, which is available in the Video & Resource Library of MyLab Math (under Interactive Figures) or at bit.ly/3raFUGB.(a) Use the sliders to set the value of c to 1, a to 2, h to 0, and k to 0. Now, use the slider to increase the value of h
Given that f (x) = x2 + 2 and g (x) = 2/x − 3, find (f º g)(x) and state its domain. What is (f º g)(5)?
True or False log2 (3x4) = 4log2(3x)
In Problems 9 and 10, verify that the functions f and g are inverses of each other by showing that f (g( x)) = x and g( f (x)) = x. Give any values of x that need to be excluded from the domain of f and the domain of g. f(x) x - = * = 4; 80 X ; g(x) 4 1- x
In Problems 11–14, each function is one-to-one. Find the inverse of each function and check your answer. Find the domain and range of f and f −1. f(x)= = 2x + 3 5x − 2
The domain of f (x) = log3 (x + 2) is (a) (-∞, ∞) (b) (2, ∞o) (c) (-2, ∞o) (d) (0, ∞)
In Problems 5 – 44, solve each logarithmic equation. Express irrational solutions in exact form. log, (2x + 11) = log5: 3
True or False log( 3 ) = log 2 log 3
The data below represent the expected percentage of putts that will be made by professional golfers on the PGA Tour, depending on distance. For example, it is expected that 99.3% of 2-foot putts will be made.(a) Using a graphing utility, draw a scatter plot of the data with distance as the
Problems 12–21. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Construct a polynomial function that might have the graph shown. (More than one answer is possible.)
For the polynomial function f (x) = 3x4 − 15x3 − 12x2 + 60x(a) Determine the end behavior of the graph.(b) Find the x- and y-intercepts of the graph.(c) Find the real zeros and their multiplicity, and determine if the graph crosses or touches the x-axis at each intercept.(d) Determine the
In Problems 5 – 44, solve each logarithmic equation. Express irrational solutions in exact form. log4|x| 3
A piece of charcoal is found to contain 30% of the carbon-14 that it originally had. When did the tree die from which the charcoal came? Use 5730 years as the half-life of carbon-14.
A pizza baked at 450°F is removed from the oven at 5:00 pm and placed in a room that is a constant 70°F. After 5 minutes, the pizza is at 300°F.(a) At what time can you begin eating the pizza if you want its temperature to be 135°F?(b) Determine the time that needs to elapse before the
Problems 12–21. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Use the Pythagorean Theorem to find the exact length of the unlabeled side in the given right triangle.
In Problems 5 – 44, solve each logarithmic equation. Express irrational solutions in exact form. log, 3x + 4 = log9|5x - 12|
The following data represent the percent of all drivers by age who have been stopped by the police for any reason within the past year. The median age represents the midpoint of the upper and lower limit for the age range.(a) Using a graphing utility, draw a scatter plot of the data treating median
Solve the equation: 4 x−3 = 82x
Solve the equation: log3 (x + 1) + log3 (2x − 3) = log9 9
Suppose that f (x) = log3 (x + 2). Solve:(a) f (x) = 0(b) f (x) > 0(c) f (x) = 3
Problems 12–21. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for later sections, a final exam, or subsequent courses such as calculus.Graph the equation (x − 3)2 + y2 = 25.
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