Solutions for Precalculus
Problem 4AYU:
To graph y= (x4) 2 you shift the graph of y= x 2 to the _______ a distance of ________ units. (pp....Problem 5AYU:
Find the discriminant of . Then identify the number of real solutions of the equation.
Problem 8AYU:
The vertical line passing through the vertex of a parabola is called the ________________.Problem 10AYU:
True or False The graph of f( x )=2 x 2 +3x4 opens up.Problem 12AYU:
True or False If the discriminant b 2 4ac=0 , the graph of f( x )=a x 2 +bx+c,a0 , will touch the...Problem 13AYU:
If b 2 4ac0 , which of the following conclusions can be made about the graph of f(x)=a x 2 +bx+c,a0...Problem 14AYU:
If the graph of f( x )=a x 2 +bx+c,a0 , has a maximum value at its vertex, which of the following...Problem 18AYU:
In Problems 13-20, match each graph to one the following functions. f( x )= x 2 +2x+1Problem 22AYU:
In Problems 13-20, match each graph to one the following functions. f( x )= x 2 +2x+2Problem 23AYU:
In Problems, find the vertex and axis of symmetry of each quadratic function.
Determine whether the...Problem 24AYU:
In Problems 2330, (a) find the vertex and axis of symmetry of each quadratic function. (b) Determine...Problem 25AYU:
In Problems 2330, (a) find the vertex and axis of symmetry of each quadratic function. (b) Determine...Problem 26AYU:
In Problems 2330, (a) find the vertex and axis of symmetry of each quadratic function. (b) Determine...Problem 27AYU:
In Problems 2330, (a) find the vertex and axis of symmetry of each quadratic function. (b) Determine...Problem 28AYU:
In Problems, find the vertex and axis of symmetry of each quadratic function.
Determine whether the...Problem 29AYU:
In Problems, find the vertex and axis of symmetry of each quadratic function.
Determine whether the...Problem 30AYU:
In Problems 2330, (a) find the vertex and axis of symmetry of each quadratic function. (b) Determine...Problem 31AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 32AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 33AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 34AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 35AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 36AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 37AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 38AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 39AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 40AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 41AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 42AYU:
In Problems 21-32, graph the function f by starting with the graph of y= x 2 and using...Problem 43AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether it graph opens up or...Problem 44AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether it graph opens up or...Problem 45AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether it graph opens up or...Problem 46AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether it graph opens up or...Problem 47AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether it graph opens up or...Problem 48AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether it graph opens up or...Problem 49AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether it graph opens up or...Problem 50AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether it graph opens up or...Problem 51AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether Us graph opens up or...Problem 52AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether Us graph opens up or...Problem 53AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether Us graph opens up or...Problem 54AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether Us graph opens up or...Problem 55AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether Us graph opens up or...Problem 56AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether Us graph opens up or...Problem 57AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether Us graph opens up or...Problem 58AYU:
In Problems 33-48, (a) graph each quadratic function by determining whether Us graph opens up or...Problem 65AYU:
In Problems 6572, determine, without graphing, whether the given quadratic function has a maximum...Problem 66AYU:
In Problems 55-62, determine, without graphing, whether the given quadratic function has a maximum...Problem 67AYU:
In Problems 55-62, determine, without graphing, whether the given quadratic function has a maximum...Problem 68AYU:
In Problems 55-62, determine, without graphing, whether the given quadratic function has a maximum...Problem 69AYU:
In Problems, determine, without graphing, whether the given quadratic function has a maximum value...Problem 70AYU:
In Problems 55-62, determine, without graphing, whether the given quadratic function has a maximum...Problem 71AYU:
In Problems, determine, without graphing, whether the given quadratic function has a maximum value...Problem 72AYU:
In Problems 55-62, determine, without graphing, whether the given quadratic function has a maximum...Problem 73AYU:
The graph of the function f( x )=a x 2 +bx+c has vertex at ( 0,2 ) and passes through the point (...Problem 74AYU:
The graph of the function f(x)=a x 2 +bx+c has vertex at ( 1,4 ) and passes through the point (1,8)...Problem 75AYU:
In Problems 77-82, for the given functions fandg , (a) Graph fandg on the same Cartesian plane. (b)...Problem 76AYU:
In Problems 77-82, for the given functions fandg , (a) Graph fandg on the same Cartesian plane. (b)...Problem 77AYU:
In Problems 77-82, for the given functions fandg , (a) Graph fandg on the same Cartesian plane. (b)...Problem 78AYU:
In Problems 77-82, for the given functions fandg , (a) Graph fandg on the same Cartesian plane. (b)...Problem 79AYU:
In Problems 77-82, for the given functions fandg , (a) Graph fandg on the same Cartesian plane. (b)...Problem 80AYU:
In Problems 77-82, for the given functions fandg , (a) Graph fandg on the same Cartesian plane. (b)...Problem 81AYU:
Answer Problems 83 and 84 using the following: A quadratic function of the form f( x )=a x 2 +bx+c...Problem 82AYU:
Answer Problems 83 and 84 using the following: A quadratic function of the form f( x )=a x 2 +bx+c...Problem 83AYU:
Suppose that f(x)= x 2 +4x21 . (a) What is the vertex of f ? (b) What are the x-intercepts of the...Problem 84AYU:
Suppose that f( x )= x 2 +2x8 . (a) What is the vertex of f ? (b) What are the x-intercepts of the...Problem 85AYU:
Analyzing the Motion of a Projectile A projectile is fired from a cliff feet above the water at an...Problem 86AYU:
Analyzing the Motion of a Projectile A projectile is fired at an inclination ofto the horizontal,...Problem 87AYU:
Maximizing Revenue Suppose that the manufacturer of a gas clothes dryer has found that, when the...Problem 88AYU:
Maximizing Revenue A lawn mower manufacturer has found that the revenue, in dollars, from sales of...Problem 89AYU:
Minimizing Marginal Cost The marginal cost of a product can be thought of as the cost of producing...Problem 90AYU:
Minimizing Marginal Cost (See Problem 91.) The marginal cost C (in dollars) of manufacturing x cell...Problem 91AYU:
Business The monthly revenue R achieved by selling x wristwatches is figured to be R( x )=75x0.2 x 2...Problem 92AYU:
Business The daily revenue R achieved by selling x boxes of candy is figured to be R( x )=9.5x0.04 x...Problem 93AYU:
Stopping Distance An accepted relationship between stopping distance d(in feet) and the speed v of a...Problem 94AYU:
Birth Rate of Unmarried Women In the United States, the birth rateof unmarried women (births...Problem 95AYU:
Chemical Reactions A self-catalytic chemical reaction results in the formation of a compound that...Problem 96AYU:
Mixed Practice Find the distance from the vertex of the parabola f(x)=2(x3)2+5 to the center of the...Problem 97AYU:
Mixed Practice Find the distance from the vertex of the parabola to the center of the circle.
Problem 103AYU:
Make up a quadratic function that opens down and has only one x-intercept . Compare yours with...Problem 109AYU:
What are the possibilities for the number of times the graphs of two different quadratic functions...Browse All Chapters of This Textbook
Chapter 1 - GraphsChapter 1.1 - The Distance And Midpoint FormulasChapter 1.2 - Graphs Of Equations In Two Variables; Intercepts; SymmetryChapter 1.3 - LinesChapter 1.4 - CirclesChapter 2 - Functions And Their GraphsChapter 2.1 - FunctionsChapter 2.2 - The Graph Of A FunctionChapter 2.3 - Properties Of FunctionsChapter 2.4 - Library Of Functions; Piecewise-defined Functions
Chapter 2.5 - Graphing Techniques: TransformationsChapter 2.6 - Mathematical Models: Building FunctionsChapter 3 - Linear And Quadratic FunctionsChapter 3.1 - Properties Of Linear Functions And Linear ModelsChapter 3.2 - Building Linear Models From DataChapter 3.3 - Quadratic Functions And Their PropertiesChapter 3.4 - Build Quadratic Models From Verbal Descriptions And From DataChapter 3.5 - Inequalities Involving Quadratic FunctionsChapter 4 - Polynomial And Rational FunctionsChapter 4.1 - Polynomial FunctionsChapter 4.2 - Graphing Polynomial Functions; ModelsChapter 4.3 - Properties Of Rational FunctionsChapter 4.4 - The Graph Of A Rational FunctionChapter 4.5 - Polynomial And Rational InequalitiesChapter 4.6 - The Real Zeros Of A Polynomial FunctionChapter 4.7 - Complex Zeros: Fundamental Theorem Of AlgebraChapter 5 - Exponential And Logarithmic FunctionsChapter 5.1 - Composite FunctionsChapter 5.2 - One-to-one Functions; Inverse FunctionsChapter 5.3 - Exponential FunctionsChapter 5.4 - Logarithmic FunctionsChapter 5.5 - Properties Of LogarithmsChapter 5.6 - Logarithmic And Exponential EquationsChapter 5.7 - Financial ModelsChapter 5.8 - Exponential Growth And Decay Models; Newton’s Law; Logistic Growth And Decay ModelsChapter 5.9 - Building Exponential, Logarithmic, And Logistic Models From DataChapter 6 - Trigonometric FunctionsChapter 6.1 - Angles, Arc Length, And Circular MotionChapter 6.2 - Trigonometric Functions: Unit Circle ApproachChapter 6.3 - Properties Of The Trigonometric FunctionsChapter 6.4 - Graphs Of The Sine And Cosine FunctionsChapter 6.5 - Graphs Of The Tangent, Cotangent, Cosecant, And Secant FunctionsChapter 6.6 - Phase Shift; Sinusoidal Curve FittingChapter 7 - Analytic TrigonometryChapter 7.1 - The Inverse Sine, Cosine, And Tangent FunctionsChapter 7.2 - The Inverse Trigonometric Functions (continued)Chapter 7.3 - Trigonometric EquationsChapter 7.4 - Trigonometric IdentitiesChapter 7.5 - Sum And Difference FormulasChapter 7.6 - Double-angle And Half-angle FormulasChapter 7.7 - Product-to-sum And Sum-to-product FormulasChapter 8 - Applications Of Trigonometric FunctionsChapter 8.1 - Right Triangle Trigonometry; ApplicationsChapter 8.2 - The Law Of SinesChapter 8.3 - The Law Of CosinesChapter 8.4 - Area Of A TriangleChapter 8.5 - Simple Harmonic Motion; Damped Motion; Combining WavesChapter 9 - Polar Coordinates; VectorsChapter 9.1 - Polar CoordinatesChapter 9.2 - Polar Equations And GraphsChapter 9.3 - The Complex Plane; De Moivre’s TheoremChapter 9.4 - VectorsChapter 9.5 - The Dot ProductChapter 9.6 - Vectors In SpaceChapter 9.7 - The Cross ProductChapter 10 - Analytic GeometryChapter 10.2 - The ParabolaChapter 10.3 - The EllipseChapter 10.4 - The HyperbolaChapter 10.5 - Rotation Of Axes; General Form Of A ConicChapter 10.6 - Polar Equations Of ConicsChapter 10.7 - Plane Curves And Parametric EquationsChapter 11 - Systems Of Equations And InequalitiesChapter 11.1 - Systems Of Linear Equations: Substitution And EliminationChapter 11.2 - Systems Of Linear Equations: MatricesChapter 11.3 - Systems Of Linear Equations: DeterminantsChapter 11.4 - Matrix AlgebraChapter 11.5 - Partial Fraction DecompositionChapter 11.6 - Systems Of Nonlinear EquationsChapter 11.7 - Systems Of InequalitiesChapter 11.8 - Linear ProgrammingChapter 12 - Sequences; Induction; The Binomial TheoremChapter 12.1 - SequencesChapter 12.2 - Arithmetic SequencesChapter 12.3 - Geometric Sequences; Geometric SeriesChapter 12.4 - Mathematical InductionChapter 12.5 - The Binomial TheoremChapter 13 - Counting And ProbabilityChapter 13.1 - CountingChapter 13.2 - Permutations And CombinationsChapter 13.3 - ProbabilityChapter 14 - A Preview Of Calculus: The Limit, Derivative, And Integral Of A FunctionChapter 14.1 - Investigating Limits Using Tables And GraphsChapter 14.2 - Algebra Techniques For Finding LimitsChapter 14.3 - One-sided Limits; ContinuityChapter 14.4 - The Tangent Problem; The DerivativeChapter 14.5 - The Area Problem; The IntegralChapter A.1 - Algebra EssentialsChapter A.2 - Geometry EssentialsChapter A.3 - PolynomialsChapter A.4 - Synthetic DivisionChapter A.5 - Rational ExpressionsChapter A.6 - Solving EquationsChapter A.7 - Complex Numbers; Quadratic Equations In The Complex Number SystemChapter A.8 - Problem Solving: Interest, Mixture, Uniform Motion, Constant Rate Job ApplicationsChapter A.9 - Interval Notation; Solving InequalitiesChapter A.10 - Nth Roots; Rational ExponentsChapter B.1 - The Viewing RectangleChapter B.2 - Using A Graphing Utility To Graph EquationsChapter B.3 - Using A Graphing Utility To Locate Intercepts And Check For SymmetryChapter B.5 - Square Screens
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