Main

• Calendar
• Course syllabus: SLOs, expectations, hw policies, grade calculation, accommodations & miscellaneous
• WebWork (various HW assignments)
• Selected solutions of WebWork assignments: From set 2.02modelsAndSeparableDEs
• Socrative quiz numbers 1, 2
• Hand-checked assignment solutions: 1, 2, 3
• Test solutions: Test 1 version A, B | Test 2 version A, B | Test 3 version A, B
• Known errors in the textbook
• Grading Codes (see the TAE document for many algebra helps)

Professor Scofield's schedule (see right margin) Video resources Linear Algebra examples (from mathispower4u.com) Differential Equation examples (from mathispower4u.com) Instructional videos from Khan Academy on linear algebra topics, and on ODEs

Additional reading resources

• Introduction to Linear Algebra, by Thomas Scofield
  Relevant material is found in the first 2 chapters, excepting Sections 1.4 and 1.6.
• Linear Algebra for Everyone, by Lorenzo Robbiano
• A Concise Introduction to Linear Algebra, by Géza Schay
• Elementary Linear Algebra, notes by Keith Matthews of U. of Queensland
• The Ordinary Differential Equations Project, by Thomas W. Judson of Stephen F. Austin State University
• Notes on Diffy Qs: Differential Equations for Engineers, by Jirí Lebl
• Engineering Differential Equations: Theory and Applications, by Bill Goodwine
• Differential Equations: A Primer for Scientists and Engineers, by Christian Constanda
• Elementary Differential Equations, by William F. Trench, with student solutions manual

Software Links

• A level curve plotter
• A plotter: try out your functions involving the Heavyside unit step here
• Direction fields
  • popular dfield program: Matlab version or standalone java program draws direction field only, not integral curves)
  • A direction field plotter by Ariel Barton (of the Univ. of Arkansas)
    
  • Darryl Nester's direction field plotter (of Bluffton College)
    
  • Direction field plotter written in geogebra (also will display solution curves)
  • One written locally as a SageMathCell App
• Phase plane
  • A general phase plane plotter for autonomous systems by Ariel Barton (of the Univ. of Arkansas)
    
  • popular pplane program: Use links for dfield above
  • A SageMathCell Phase Plane app, and a counterpart in 3D
  • An app for emphasizing connections between matrices, e-values and phase portrait for linear systems
    
• Numerical solutions app (Euler method, Runge-Kutta, and more)
• An app to generate Picard iterates
• Sage: official website (documentation/downloads) | Calvin's online server (create account on first visit) | SageMathCell (one-off commands) | examples relevant to MATH 231
  • Sage cell for carrying out elementary row operations on a matrix
  • Eigenvectors: Compare unit input vector u with output Au, or see an animation
  • Undetermined coefficients: test choices for y_p on 1st-order and 2nd-order DEs
  • Eigenvalues and eigenvectors for a matrix
• Wolfram alpha

Content Supplements

• Differential equations supplements
  • Table of Laplace transforms
  • Some worked examples of inverse Laplace transforms
  • More Inverse Laplace transform practice
• Linear algebra supplements
  • Matrices on TI-83/84:
    • Video instruction on entering a matrix, on elementary row operations
    • A summary page by Dr. Claude S. Moore of Cape Fear Community College, NC