Solutions for Precalculus
Problem 1AYU:
1. Find f( 1 ) if f( x )=2 x 2 xProblem 2AYU:
2. Factor the expression 6 x 2 +x-2Problem 3AYU:
3. Find the quotient and remainder if 3 x 4 -5 x 3 +7x4 is divided by x3 . (pp. A25-A27 or A31-A34)Problem 4AYU:
4. Solve x 2 =3-x .Problem 5AYU:
5. f( x )=q(x)g( x )+r(x) , the function r( x ) is called the ______ . (a) remainder(b) dividend(c)...Problem 7AYU:
7. Given f( x )=3 x 4 -2 x 3 +7x-2 , how many sign changes are there in the coefficients of f( x ) ?...Problem 8AYU:
8. True or False Every polynomial function of degree 3 with real coefficients has exactly three real...Problem 10AYU:
10. True or False If f is a polynomial function of degree 4 and if f( 2 )=5 , then f( x ) x-2 =p( x...Problem 11AYU:
In Problems 11-20, use the Remainder Theorem to find the remainder when f( x ) is divided by x-c ....Problem 12AYU:
In Problems 11-20, use the Remainder Theorem to find the remainder when f( x ) is divided by x-c ....Problem 13AYU:
In Problems , use the Remainder Theorem to find the remainder when
is divided by . Then use the...Problem 14AYU:
In Problems 11-20, use the Remainder Theorem to find the remainder when f( x ) is divided by x-c ....Problem 15AYU:
In Problems , use the Remainder Theorem to find the remainder when
is divided by . Then use the...Problem 16AYU:
In Problems 11-20, use the Remainder Theorem to find the remainder when f( x ) is divided by x-c ....Problem 17AYU:
In Problems 11-20, use the Remainder Theorem to find the remainder when f( x ) is divided by x-c ....Problem 18AYU:
In Problems 11-20, use the Remainder Theorem to find the remainder when f( x ) is divided by x-c ....Problem 19AYU:
In Problems 11-20, use the Remainder Theorem to find the remainder when f( x ) is divided by x-c ....Problem 20AYU:
In Problems 11-20, use the Remainder Theorem to find the remainder when f( x ) is divided by x-c ....Problem 21AYU:
In Problems 21-32, use Descartes' Rule of Signs to determine how many positive and how many negative...Problem 22AYU:
In Problems 21-32, use Descartes' Rule of Signs to determine how many positive and how many negative...Problem 23AYU:
In Problems, determine the maximum number of real zeros that each polynomial function may have. Then...Problem 24AYU:
In Problems 21-32, use Descartes' Rule of Signs to determine how many positive and how many negative...Problem 25AYU:
In Problems 2132, determine the maximum number of real zeros that each polynomial function may have....Problem 26AYU:
In Problems 21-32, use Descartes' Rule of Signs to determine how many positive and how many negative...Problem 27AYU:
In Problems 21-32, use Descartes' Rule of Signs to determine how many positive and how many negative...Problem 28AYU:
In Problems 21-32, use Descartes' Rule of Signs to determine how many positive and how many negative...Problem 29AYU:
In Problems 21-32, use Descartes' Rule of Signs to determine how many positive and how many negative...Problem 30AYU:
In Problems 21-32, use Descartes' Rule of Signs to determine how many positive and how many negative...Problem 31AYU:
In Problems 21-32, use Descartes' Rule of Signs to determine how many positive and how many negative...Problem 32AYU:
In Problems 21-32, use Descartes' Rule of Signs to determine how many positive and how many negative...Problem 33AYU:
In Problems 33-44, determine the maximum number of real zeros that each polynomial function may...Problem 34AYU:
In Problems 33-44, determine the maximum number of real zeros that each polynomial function may...Problem 35AYU:
In Problems 3344, list the potential rational zeros of each polynomial function. Do not attempt to...Problem 36AYU:
In Problems 33-44, determine the maximum number of real zeros that each polynomial function may...Problem 37AYU:
In Problems 3344, list the potential rational zeros of each polynomial function. Do not attempt to...Problem 38AYU:
In Problems 33-44, determine the maximum number of real zeros that each polynomial function may...Problem 39AYU:
In Problems 33-44, determine the maximum number of real zeros that each polynomial function may...Problem 40AYU:
In Problems 33-44, determine the maximum number of real zeros that each polynomial function may...Problem 41AYU:
In Problems 33-44, determine the maximum number of real zeros that each polynomial function may...Problem 42AYU:
In Problems 33-44, determine the maximum number of real zeros that each polynomial function may...Problem 43AYU:
In Problems 33-44, determine the maximum number of real zeros that each polynomial function may...Problem 44AYU:
In Problems 33-44, determine the maximum number of real zeros that each polynomial function may...Problem 45AYU:
In Problems 51-68, find the real zeros of f. Use the real zeros to factor f 51. f( x )= x 3 +2 x 2...Problem 46AYU:
In Problems 51-68, find the real zeros of f. Use the real zeros to factor f 52. f( x )= x 3 +8 x 2...Problem 47AYU:
In Problems 4556, use the Rational Zeros Theorem to find all the real zeros of each polynomial...Problem 48AYU:
In Problems 4556, use the Rational Zeros Theorem to find all the real zeros of each polynomial...Problem 49AYU:
In Problems 4556, use the Rational Zeros Theorem to find all the real zeros of each polynomial...Problem 50AYU:
In Problems 4556, use the Rational Zeros Theorem to find all the real zeros of each polynomial...Problem 51AYU:
In Problems, use the Rational Zeros Theorem to find all the real zeros of each polynomial function....Problem 52AYU:
In Problems, use the Rational Zeros Theorem to find all the real zeros of each polynomial function....Problem 53AYU:
In Problems 51-68, find the real zeros of f. Use the real zeros to factor f 59. f( x )= x 4 + x 3 -3...Problem 54AYU:
In Problems 51-68, find the real zeros of f. Use the real zeros to factor f 60. f( x )= x 4 - x 3 -6...Problem 55AYU:
In Problems 4556, use the Rational Zeros Theorem to find all the real zeros of each polynomial...Problem 56AYU:
In Problems 4556, use the Rational Zeros Theorem to find all the real zeros of each polynomial...Problem 57AYU:
In Problems 75-84, find the real solutions of each equation. x 4 - x 3 +2 x 2 -4x-8=0Problem 63AYU:
In Problems 75-84, find the real solutions of each equation. x 4 +4 x 3 +2 x 2 -x+6=0Problem 64AYU:
In Problems 75-84, find the real solutions of each equation. x 4 -2 x 3 +10 x 2 -18x+9=0Problem 65AYU:
In Problems 75-84, find the real solutions of each equation. x 3 - 2 3 x 2 + 8 3 x+1=0Problem 67AYU:
In Problems 5768, solve each equation in the real number system. 2x419x3+57x264x+20=0Problem 69AYU:
In Problems 6978, find bounds on the real zeros of each polynomial function. f(x)=x43x24Problem 71AYU:
In Problems 6978, find bounds on the real zeros of each polynomial function. f(x)=x4+x3x1Problem 72AYU:
In Problems 6978, find bounds on the real zeros of each polynomial function. f(x)=x4x3+x1Problem 73AYU:
In Problems 6978, find bounds on the real zeros of each polynomial function. f(x)=3x4+3x3x212x12Problem 74AYU:
In Problems 6978, find bounds on the real zeros of each polynomial function. f(x)=3x43x35x2+27x36Problem 79AYU:
In Problems 85-90, use the Intermediate Value Theorem to show that each function has a zero in the...Problem 80AYU:
In Problems 85-90, use the Intermediate Value Theorem to show that each function has a zero in the...Problem 81AYU:
In Problems 85-90, use the Intermediate Value Theorem to show that each function has a zero in the...Problem 82AYU:
In Problems 85-90, use the Intermediate Value Theorem to show that each function has a zero in the...Problem 83AYU:
In Problems 85-90, use the Intermediate Value Theorem to show that each function has a zero in the...Problem 84AYU:
In Problems 85-90, use the Intermediate Value Theorem to show that each function has a zero in the...Problem 85AYU:
In Problems, each equation has a solution in the interval indicated. Use the method of Example to...Problem 86AYU:
In Problems, each equation has a solution in the interval indicated. Use the method of Example to...Problem 87AYU:
In Problems 8588, each equation has a solution r in the interval indicated. Use the method of...Problem 88AYU:
In Problems, each equation has a solution in the interval indicated. Use the method of Example to...Problem 89AYU:
In Problems 8992, each polynomial function has exactly one positive real zero. Use the method of...Problem 90AYU:
In Problems, each polynomial function has exactly one positive real zero. Use the method of Example...Problem 91AYU:
In Problems, each polynomial function has exactly one positive real zero. Use the method of Example...Problem 92AYU:
In Problems 8992, each polynomial function has exactly one positive real zero. Use the method of...Problem 93AYU:
In Problems 91-98, analyze each polynomial function using Steps 1 through 8 on page 193 in Section...Problem 94AYU:
In Problems 91-98, analyze each polynomial function using Steps 1 through 8 on page 193 in Section...Problem 101AYU:
In Problems 91-98, analyze each polynomial function using Steps 1 through 8 on page 193 in Section...Problem 102AYU:
In Problems 91-98, analyze each polynomial function using Steps 1 through 8 on page 193 in Section...Problem 103AYU:
In Problems 91-98, analyze each polynomial function using Steps 1 through 8 on page 193 in Section...Problem 104AYU:
In Problems 91-98, analyze each polynomial function using Steps 1 through 8 on page 193 in Section...Problem 105AYU:
105. Suppose that. Find the zeros of.
Problem 106AYU:
Suppose that f(x)=4x311x226x+24. Find the zeros of f(x2).Problem 107AYU:
Find k such that f( x )= x 3 k x 2 +kx+2 has the factor x2 .Problem 114AYU:
One solution of the equation x 3 +5 x 2 +5x2=0 is 2 . Find the sum of the remaining solutions.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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