ttc-Mathematics Describing the Real World -sup3r
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Torrent File Content (40 files)
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Description
lectures
00. Professor Bio
01. An Introduction to Precalculus-Functions
02. Polynomial Functions and Zeros
03. Complex Numbers
04. Rational Functions
05. Inverse Functions
06. Solving Inequalities
07. Exponential Functions
08. Logarithmic Functions
09. Properties of Logarithms
10. Exponential and Logarithmic Equations
11. Exponential and Logarithmic Models
12. Introduction to Trigonometry and Angles
13. Trigonometric Functions-Right Triangle Definition
14. Trigonometric Functions-Arbitrary Angle Definition
15. Graphs of Sine and Cosine Functions
16. Graphs of Other Trigonometric Functions
17. Inverse Trigonometric Functions
18. Trigonometric Identities
19. Trigonometric Equations
20. Sum and Difference Formulas
21. Law of Sines
22. Law of Cosines
23. Introduction to Vectors
24. Trigonometric Form of a Complex Number
25. Systems of Linear Equations and Matrices
26. Operations with Matrices
27. Inverses and Determinants of Matrices
28. Applications of Linear Systems and Matrices
29. Circles and Parabolas
30. Ellipses and Hyperbolas
31. Parametric Equations
32. Polar Coordinates
33. Sequences and Series
34. Counting Principles
35. Elementary Probability
36. GPS Devices and Looking Forward to Calculus
What's the sure road to success in calculus? The answer is simple: Precalculus. Traditionally studied after Algebra II, this mathematical field covers advanced algebra, trigonometry, exponents, logarithms, and much more. These interrelated topics are essential for solving calculus problems, and by themselves are powerful methods for describing the real world, permeating all areas of science and every branch of mathematics. Little wonder, then, that precalculus is a core course in high schools throughout the country and an important review subject in college. Unfortunately, many students struggle in precalculus because they fail to see the links between different topics-between one approach to finding an answer and a startlingly different, often miraculously simpler, technique. As a result, they lose out on the enjoyment and fascination of mastering an amazingly useful tool box of problem-solving strategies. And even if you're not planning to take calculus, understanding the fundamentals of precalculus can give you a versatile set of skills that can be applied to a wide range of fields-from computer science and engineering to business and health care. Mathematics Describing the Real World: Precalculus and Trigonometry is your unrivaled introduction to this crucial subject, taught by award-winning Professor Bruce Edwards of the University of Florida. Professor Edwards is coauthor of one of the most widely used textbooks on precalculus and an expert in getting students over the trouble spots of this challenging phase of their mathematics education. "Calculus is difficult because of the precalculus skills needed for success," Professor Edwards points out, adding, "In my many years of teaching, I have found that success in calculus is assured if students have a strong background in precalculus." A Math Milestone Made Clear In 36 intensively illustrated half-hour lectures, supplemented by a workbook with additional explanations and problems, Mathematics Describing the Real World takes you through all the major topics of a typical precalculus course taught in high school or college. Those who will especially benefit from Professor Edwards's lucid and engaging approach include high school and college students currently enrolled in precalculus who feel overwhelmed and want coaching from an inspiring teacher who knows where students stumble; parents of students, who may feel out of their depth with the advanced concepts taught in precalculus; those who have finished Algebra II and are eager to get a head start on the next milestone on the road to calculus; beginning calculus students who want to review and hone their skills in crucial precalculus topics; anyone motivated to learn precalculus on his or her own, whether as a home-schooled pupil or as an adult preparing for a new career. The Powerful Tools of Precalculus With precalculus, you start to see all of mathematics as a unified whole-as a group of often radically different techniques for representing data, analyzing problems, and finding solutions. And you discover that these techniques are ultimately connected in a beautiful way. Perceiving these connections helps you choose the best tool for a given problem: Algebraic functions: Including polynomial functions and rational functions, these equations relate the input value of a variable to a single output value, corresponding to countless everyday situations in which one event depends on another. Trigonometry: Originally dealing with the measurement of triangles, this subject has been vastly enriched by the concept of the trigonometric function, which models many types of cyclical processes, such as waves, orbits, and vibrations. Exponential and logarithmic functions: Often involving the natural base, e, these functions are built on terms with exponents and their inverse, logarithms, and describe phenomena such as population growth and the magnitude of an earthquake on the Richter scale. Complex numbers: Seemingly logic-defying, complex numbers are based on the square root of -1, designated by the symbol i. They are essential for solving many technical problems and are the basis for the beautiful patterns in fractal geometry. Vectors: Quantities like velocity have both magnitude and direction. Vectors allow the direction component to be specified in a form that allows addition, multiplication, and other operations that are crucial in fields such as physics. Matrices: A matrix is ​​a rectangular array of numbers with special rules that permit two matrices to be added or multiplied. Practically any situation where data are collected in columns and rows can be treated mathematically as a matrix. In addition, Professor Edwards devotes two lectures to conic sections, slicing a cone mathematically into circles, parabolas, ellipses, and hyperbolas. You also learn when it's useful to switch from Cartesian to polar coordinates; how infinite sequences and series lead to the concept of the limit in calculus; and two approaches to counting questions: permutations and combinations. You close with an introduction to probability and a final lecture that features an actual calculus problem, which your experience in precalculus makes ... elementary! Real-World Mathematics Believing that students learn mathematics most effectively when they see it in the context of the world around them, Professor Edwards uses scores of interesting problems that are fun, engaging, and often relevant to real life. Among the many applications of precalculus that you'll encounter are these: Public health: A student with a new strain of flu arrives at college. How long before every susceptible person is infected? An exponential function called the logistic growth model shows how quickly an epidemic spreads. Surveying: Suppose you have to measure the diagonal width of a marsh without getting wet. It's a simple matter of walking two sides of a triangle on dry land and then using trigonometry to determine the length of the third side that spans the marsh. Astronomy: One of the most famous cases involving the sine and cosine functions that model periodic phenomena occurred in 1967, when astronomer Jocelyn Bell detected a radio signal from space at 1.3373-second intervals. It proved to be the first pulsar ever observed. Acoustics: The special properties of an ellipse explain why a person standing at a given spot in the US Capitol's Statuary Hall can hear a whisper from someone standing 85 feet away. Computer graphics: How do you make an object appear to rotate on a computer screen? Matrix algebra allows you to move each pixel in an image by a specified angle by multiplying two matrices together. Probability: Have you ever forgotten your four-digit ATM PIN number? What is the probability that you can guess it? A simple calculation shows that you would have to punch numbers nonstop for many hours before being assured of success. An Adventure in Mathematical Learning A three-time Teacher of the Year in the College of Liberal Arts and Sciences at the University of Florida, Professor Edwards has a time-tested approach to making difficult material accessible. In Mathematics Describing the Real World, he enlivens his lectures with study tips and a feature he calls "You Be the Teacher," in which he puts you in the professor's shoes by asking how you would design a particular test problem or answer one of the frequently asked questions he gets in the classroom. For example, are all exponential functions increasing? After you hear Professor Edwards's explanation, you'll know that when someone uses the term "exponentially," you should ask, "Do you mean exponential growth or decay?" - For it can go in either direction. He also gives valuable tips on using graphing calculators, pointing out their amazing capabilities-and pitfalls.
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