Math 120

Winter 2009

Handouts from Lectures

Instructor: 
Dale Winter
6124 Wean Hall
(412) 268-8419
amanita@andrew.cmu.edu

Many of the files on this site are posted in PDF format. If you have any trouble reading them, try downloading the latest version of the free Adobe Acrobat Reader software.

  The handouts distributed and used in lectures are listed in the table below.

Click on the title of the handout to download a copy in PDF format.

Date Title Summary
January 12 First Day of Class Policies
  • Class policies for the semester
  • Tentative day-by-day outline of the course
January 12 Influences on Teenage Drug Use
  • Identifying variables in a relationship
  • Definition of a function
  • Vertical line test for a function represented by a graph
January 14 Working with Function Notation
  • Understanding graphical, numerical and symbolic representations of a function
  • Evaluating symbolic ststements expressed in function notation using functions defined by graphs and tables
January 12 Finding a Polynomial Formula using Roots and Multiplicities
  • Locating the roots of a polynomial function defined by a graph
  • Determining the possible multiplicty of each root
  • Evaluating the constant of proportionality
  • Writing down a polynomial formula compatible with a graph
February 6 Finding derivatives using the Product and Quotient rules
  • Reading the formula of a function to determine when the product or quotient rules can be applied
  • Representing functions as products of simpler functions (whose derivatives we know or can work out)
  • Representing functions as quotients of simpler functions (whose derivatives we know or can work out)
  • Finding formulas for derivatives of functions
February 6 Finding derivatives using the Chain rule
  • Reading the formula of a function to determine when the Chain rule can be applied
  • Representing functions as compositions of simpler functions (whose derivatives we know or can work out)
  • Finding formulas for derivatives of functions
February 11 Problems for in-class exam review
  • The exam covers Sections 1.1 to 2.5 (inclusive)
February 11 Solutions to in-class review problems
  • The exam covers Sections 1.1 to 2.5 (inclusive)
February 16 Practice at implicit differentiation
  • Working through the steps that we identified in class to calculate the derivative even when y cannot be isolated from x.
February 18 Experimental verification of the Chain rule
  • Collecting data on the rate of change of two quantities
  • Creating a theoretical relationship between the two rates of change (using the Chain rule)
  • Comparing theory and experiment to test the Chain rule experimentlly
February 18 The Gulf of Sidra Incident
  • Using the Theorem of Pythagoras to create a relationship between to quantities
  • Relating two rates of change using the Chain rule
  • Using the results to correct the relative speed reported by a radar
February 18 Solutions for the Gulf of Sidra
February 20 The Long Shadow of Jack the Ripper
  • Using the Principle of Similar Triangles to create a relationship between to quantities
  • Relating two rates of change using the Chain rule
  • Using the results to correct the relative speed reported by a radar
February 20 Solutions for Jack the Ripper
February 23 Age of a giant shark tooth
  • Testing a table of values for perfect exponentiality
  • Finding a formula for an exponential function
  • Setting up and solving equations involving exponential functions
February 23 Solutions for the giant shark tooth
February 25 Age of the desert mummies of Xinjiang province
  • Testing a table of values for perfect exponentiality
  • Finding a formula for an exponential function
  • Setting up and solving equations involving exponential functions
February 25 Solutions for the desert mummies
February 25 (Not distributed in class) Solving equations using logarithms
  • Algebraic properties of the common logarithm function
  • Solving equations that involve common logarithms
February 25 (Not distributed in class) The concept of the inverse of a function
  • Reversing the actions of a function
  • Testing a function to determine when the inverse is also a function
  • Finding a formula for the inverse
  • Sketching the graph of the inverse
February 25 (Not distributed in class) Logarithms as inverses of exponential functions
  • Setting up exponential equations
  • Solving exponential equations using logarithms
  • Understanding why the common logarithm is the inverse of the exponential function y = 10x
  • Properties of the logarithm that can be inferred because it is an inverse
March 2 Solving equations using logarithms
  • Recognizing when and when not to use logarithms to solve an equation
  • Using the properties of logarithms to solve equations that involve exponential functions
March 2 Solutions for the logarithms handout
March 18 In-class review problems for Exam 2
  • Everything from implicit differentiation to L'Hopital's rule (inclusive of both)
March 18 Solutions for in-class review problems
April 8 Calculating the absolute oral bioavailability of Viagra
  • Setting up and evaluating a left-hand Riemann sum on a calculator
  • Setting up and evaluating a right-hand Riemann sum on a calculator
April 8 Solutions for Riemann sums handout
April 22 In-class review problems for Exam 3
  • Everything from maximum and minimum values to u-substitution (inclusive of both)
April 22 Solutions for in-class review problems
April 27 The technique of u-substitution
  • Identifying the inside function u
  • Calculating the derivative du/dx and making dx the subject
  • Replacing the inside function (by u) and dx in the original integral
  • Calculating the anitderivative with respect to du
  • Converting the antiderivative formula so that it is expressed in terms of x
May 1 In-class review for the final exam
  • The final exam is cumulative and may include any topic covered during the semester.
May 1 Solutions for final exam review problems