Math 122 

Fall 2008

Handouts from Recitation

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 Tuesday recitation sections are listed in the table below.

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

Date Title Summary
August 26 Reversing the Chain Rule
  • Identifying "inside" and "outside" functions
  • Creating antiderivatives by reversing the Chain Rule for Derivatives
August 26 U-substitution
  • Identifying good choices for "u"
  • Completing the steps in the process of u-substitution
  • Calculating antiderivatives in a systematic way
September 2 Trigonometry formulas
  • Useful identities
  • Integration and differentiation formulas for trigonometric functions
September 2 Evaluating trigonometric integrals
  • Determining what "trick" will be helpful for each integral
  • Making appropriate substitutions and simplifications
  • Using integration formulas and integration techniques to find antiderivatives
September 9 Setting up and evaluating Riemann sums on a TI-84 calculator
  • Understanding what a Riemann sum is
  • Being able to write down a Riemann sum using sigma notation
  • Being able to translate sigma notation into the summation notation used by a TI-84 calculator
  • Being able to evaluate Riemann sums on a TI-84 calculator
September 16 Convergence and divergence of improper integrals - graphical comparisons
  • Understanding the concept of determining convergence or divergence by comparison
  • Using graphs to determine the convergence or divergence of an improper integral
  • Using graphs in connection with techniques of integration to determine the convergence or divergence of an improper integral
September 16 Convergence and divergence of improper integrals - algebraic comparisons
  • Understanding the concept of determining convergence or divergence by comparison
  • Being able to make an educated guess about convergence or divergence based on the algebraic structure of an integrand
  • Being able to find a known improper integral to compare to an unknown improper integral
  • Being able to construct an algebraic argument for the comparison of two functions and their improper integrals
September 23
  • Envisioning a three dimensional volume of revolution based on a two dimensional drawing
  • Setting up and evaluating integrals to calculate a volume of revolution
  • Using Archimedes' Principle to solve a problem in Naval Architecture
September 30 Calculating the center of mass
  • Creating an object that has a center of mass that can be calculated
  • Setting up and evaluating integrals to find the center of mass
  • Measuring the required physical parameters of the object to complete the calculation
  • Checking the accuracy of the calculations by measuring the location of the center of mass empirically
October 7
  • Collecting data from an activity that simulates the spread of a disease
  • Understanding the concavity of the data obtained from the activity
  • Approximating derivatives based on the data from the activity
  • Creating a differential equation to model the spread of the disease in the activity
October 14
  • Recognizing when to use separation of variables and when to use integrating factors
  • Using separation of variables to solve a differential equation
  • Using an integrating factor to solve a differential equation
  • Finding and solving the characteristic equation for a second order homogeneous equation with constant coefficients
  • Using the roots of the characteristic equation to find a formula for the solution of a second order equation
  • Using initial conditions to find the values of arbitrary constants in solutions of differential equations
October 21
  • Finding and solving the characteristic equation for a second order homogeneous equation with constant coefficients
  • Using the roots of the characteristic equation to find a formula for the solution of a second order equation
  • Constructing a particular solution for a nonhomogeneous second order differential equation
  • Using the nonhomogeneous differential equation to determine the coefficients in the particular solution
  • Adding the homogeneous and particular solutions to create a general solution for a nonhomogeneous differential equation
  • Using initial conditions to find the values of arbitrary constants in solutions of differential equations
October 28
  • Understanding some of the factors that go into computing the monthly payment on an American mortgage
  • Setting up a finite geometric series
  • Using geometric series summation formula
  • Determining the total amount paid (not counting inflation) on a fixed-interest, fixed-duration mortgage
  • Understanding the effect of the size of the downpayment on the total amount repaid over the life of the loan
  • Understanding the effect of the duration of the loan on the total amount repaid over the life of the loan
October 28
  • Setting up an infinite geometric series
  • Using geometric series summation formula
October 28
  • Definitions of finite and infinite geometric series
  • Summation formulas for finite and infinite geometric series
November 4
  • Convergence and divergence of series (finite and infinite)
  • The nth term test for divergence
  • The integral test for convergence and divergence
  • The ratio test for convergence and divergence
  • The comparison test for convergence and divergence
  • Using p-series with the comparison test for convergence and divergence
November 11
  • Drawing slope fields
  • Using slope fields to sketch an approximate graph of the solution of an initial value problem
  • Using a differential equation to determine the coefficients in a Taylor polynomial
  • Investigating the length of the interval over which the solution of an initial value problem can be approximated by a Taylor polynomial
November 18
The solutions provided here for Handout 17, Problem (d) are somewhat vague when determining the end-points of the interval of convergence. See if you can use the results of a real mathematical research paper (click to access) to show more rigorously that the power series does converge at x=-5.25 and does not converge at x=-4.75.
  • Using the ratio test to calculate the radius of convergence for a power series
  • Locating the end-points of the interval of convergence of a power series
  • Using convergence tests to determine whether or not a power series converges at the end-points of the interval of convergence
  • Writing intervals of convergence using correct interval notation
December 2
  • Creating graphs of x(t) and y(t) for a parametric curve
  • Creating graphs for x(t) and y(t) corresponding to a parametric curve
  • Drawing a parametric curve in the xy-plane given graphs of x(t) and y(t).