Write twocolumn proofs for Review Exercises 39 to 46.
Given: 

Prove: 

Calculus: Early Transcendentals
Precalculus: Mathematics for Calculus (Standalone Book)
Calculus (MindTap Course List)
Finite Mathematics
Understanding Basic Statistics
Calculus: Early Transcendental Functions
Mathematical Excursions (MindTap Course List)
Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach
Essentials of Statistics for The Behavioral Sciences (MindTap Course List)
Applied Calculus
Probability and Statistics for Engineering and the Sciences
Single Variable Calculus: Early Transcendentals, Volume I
Statistics for The Behavioral Sciences (MindTap Course List)
Intermediate Algebra
Finite Mathematics and Applied Calculus (MindTap Course List)
Calculus: An Applied Approach (MindTap Course List)
Mathematical Applications for the Management, Life, and Social Sciences
Multivariable Calculus
Single Variable Calculus
Elementary Technical Mathematics
Essentials Of Statistics
Contemporary Mathematics for Business & Consumers
Elements Of Modern Algebra
Trigonometry (MindTap Course List)
Single Variable Calculus: Early Transcendentals
Calculus of a Single Variable
Study Guide for Stewart's Single Variable Calculus: Early Transcendentals, 8th
Study Guide for Stewart's Multivariable Calculus, 8th
Calculus: Early Transcendental Functions (MindTap Course List)
Finite Mathematics for the Managerial, Life, and Social Sciences
STATISTICS F/BUSINESS+ECONOMICSTEXT
Statistics for Business & Economics, Revised (MindTap Course List)
College Algebra (MindTap Course List)
Introduction To Statistics And Data Analysis
Research Methods for the Behavioral Sciences (MindTap Course List)
Mathematics For Machine Technology
Research Methods for the Behavioral Sciences (MindTap Course List)
Calculus (MindTap Course List)
Multivariable Calculus
Mathematics: A Practical Odyssey
A First Course in Differential Equations with Modeling Applications (MindTap Course List)
Discrete Mathematics With Applications
Essentials Of Statistics For Business & Economics
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)
College Algebra
Introductory Statistics