On-line Math 21

On-line Math 21

Contents

The ``chapters'', or ``units'' involved in this course correspond roughly to the chapters in your text, but we won't be following the text exactly. You really should work through the units in the order they are presented, though in each one there is a lot of room to explore in the order that makes the most sense for you.

0  Introduction

This chapter introduces the major ideas of calculus: slope of curves and velocity, limits, and finding areas by successive approximation, so you can get an idea of what is to come.

1  Limits and continuity

The notion of a limit is the single idea, more than any other, that separates calculus from all other mathematics. It is a difficult idea to master completely, and we will be coming back to this notion in various guises throughout the course.

2  The derivative

The first real use of this notion of a limit is to make sense of the ``slope of a curve'', the derivative of a function. Although the idea of the slope of a curve is not difficult, and simple tools like a speedometer can find the derivative of the position of a car very easily, there are many serious applications of this notion that help understand the behavior of functions.

3  The Zoo

Calculus is of course the study of functions. There is a collection of standard functions that are the standard fare for calculus, which we call elementary functions. These include all of the functions used to model most physical and man-made phenomena. This chapter introduces, with reviews of the basics when you need them, all the functions we will be encountering.

4  Theory and Practice

This chapter discusses the primary theoretical tool of differential calculus, the Mean Value Theorem, and the many applications that actually owe their existence (or at least their theoretical justification) to that tool, such as optimization problems and qualitative descriptions of functions (curve-sketching).

5  The integral

The theory of integration, the area under a curve, is as basic a notion in calculus as the slope of a curve. It's introduced late in the course since the main method of calculation of integrals, using the Fundamental Theorem of Calculus, is another application of the Mean Value Theorem. This chapter also includes the ``standard'' techniques for computing integrals, which is a topic that will be covered in greater depth in the second semester.

6  Applications of Integration.

Any computation that can be broken down into simplified sub-computations, and then added up to solve the more complicated original question can be analyzed in terms of integration. A simple example is the area of a plane region, which can be sliced up into little strips, whose area is just the width times the height. The sum of the areas of the strips gives the area of the original region. We will go over several such applications of integration to various measurements. More importantly, we will discuss how to go about turning a complicated computation into an application of integration.

Review Material

Algebra

Factoring, quadratic formula, dealing with terms and factors in equations. Inequalities.

Functions

What is an x ? Domain and Range, graphing, composition and inverse.

Trigonometry

Exponential and Logarithm functions

Hyperbolic functions and hyperbolic trigonometry

Curve sketching

Explorations

More on Differentiability and continuity

Differentiability and continuity, integrability and continuity, uniform continuity,

Sophisticated models

Logistic growth, differential equations.

More integration theory

Integrable functions. Step functions and impulses

Real-world applications

Simple electric circuits, basic economic models, examples from physics

History

Newton versus Leibniz, l'Hospital and Bernoulli. Cauchy and the advent of rigor. What did the Greeks know? How close were they to developing calculus? What about the Arabs, Phoenicians, or Meso-American mathematicians?

Modern research

Limits and function spaces, optimization and geometry, differential equations.

Copyright (c) by David L. Johnson, last modified
On May 1, 2000..


File translated from TEX by TTH, version 2.61.
On 18 Apr 2000, 10:20.