Week1.mw
Nagle, Saff, and Snider, p. 5.
2. Type of equation, variables, linearity.
3. Type of equation, variables, linearity.
5. Type of equation, variables, linearity.
6. Type of equation, variables, linearity.
8. Type of equation, variables, linearity.
Nagle, Saff, and Snider, p. 14.
5. Check an explicit solution (failure).
8. Check an explicit solution (success).
11. Check an implicit solution.
13. Check an implicit solution to second order differential equation (success).
17. Plotting a family of solutions.
20. a) Find m so that exp(m*x) is a solution.
22. a) Initial value problem.
Nagle, Saff, and Snider, p. 22.
4. Use of DEplot for direction fields.
6. Second derivative of solution curve from first order equation.
10. c) Use of DEplot for direction fields.
Week2.mw
Nagle, Saff, and Snider, p. 28.
5. Euler's Method via dsolve/numeric.
8. Euler's Method via dsolve/numeric.
9. Plotting Euler method output with specified stepsize.
Nagle, Saff, and Snider, p. 51.
23. Separable initial value problem.
26. Separable initial value problem.
Week3.mw
Nagle, Saff, and Snider, p. 59.
14. First order linear equation, not in standard form.
22. First order linear initial value problem, not in standard form.
25. First order initial value problem, general solution.
30. Bernoulli equation.
32. Discontinuous forcing term using dsolve, piecewise, plot.
Nagle, Saff, and Snider, p. 71.
21. Exact initial value problem.
29. Integrating factors for exact equations. Check for solution.
Nagle, Saff, and Snider, p. 83.
15. Homogeneous equation to separable equation, substitution techniques.
21. Bernoulli equation to first order linear equation, substitution techniques.
Week4.mw
Nagle, Saff, and Snider, p. 104.
1. Salt solution problem with dsolve.
15. Logistic growth in alligator populations.
17. Forward difference derivative, least squares logistic curve fit.
25. Radiocarbon dating.
26. Sensitivity analysis of radiocarbon dating.
Nagle, Saff, and Snider, p. 113.
4. Cooling problem.
11. Cooling: a car with air conditioner.
15. Stefan's law of radiation. Separation of variables.
Nagle, Saff, and Snider, p. 121.
7. Parachutist, classical approach to discontinuity.
9. Free fall in a fluid.
18. Friction on an inclined plane.
25. Escape velocity.
Nagle, Saff, and Snider, p. 133.
8. Heun or improved Euler method vs. forward Euler.
19. Heun or improved Euler method for logistic models.
Week5.mw
Nagle, Saff, and Snider, p. 143.
5. Taylor approximation methods of order 2 and 4.
9. Runge Kutta approximation for differential equation in #5.
12. Tabular output for Runge Kutta.
Nagle, Saff, and Snider, p. 166.
19-22. Linear second order equation or not? Theorem 2: existence and uniqueness of solutions for second order initial value problems.
30. Boundary value problem solution possibilities.
31. Initial value problem and derivatives of solutions.
Nagle, Saff, and Snider, p. 176.
7. Independent solutions for initial value problem.
13. Linear combinations from fundamental solution sets.
15. b) Properties of the Wronskian determinant.
18. Linearly independent functions for which the Wronskian determinant is identically zero.
19. Wronskian from the equation.
20. Derivation of Abel's Identity.
21. Simultaneous zeros of independent solutions.
Week6.mw
Nagle, Saff, and Snider, p. 181.
5. Reduction of order, long version.
10. Reduction of order, reduction of order formula.
Nagle, Saff, and Snider, p. 189.
19. Second order linear constant coefficient initial value problem.
26. Third order linear constant coefficient equation.
46. From Cauchy-Euler equation to constant coefficient equation.
49. a) Numerical approximation to eigenvalues.
50. Repeated roots and reduction of order.
Nagle, Saff, and Snider, p. 198.
22. Complex eigenvalue initial value problem.
29. a) Third order equation, complex eigenvalues.
41. a) Repeated complex eigenvalues.
Week7.mw
Nagle, Saff, and Snider, p. 203.
4. Superposition.
11 c). Superposition.
18. Reduction of order for nonhomogeneous equations. DESol.
Nagle, Saff, and Snider, p. 345.
10. Linear independence of functions.
17. Independence of solutions of a differential equation.
19. Third order initial value problem.
Nagle, Saff, and Snider, p. 352.
29. Fourth order general solution, approximate eigenvalues. No annotations on assume.
Nagle, Saff, and Snider, p. 211.
15. General solution, second order, undetermined coefficients.
31. Initial value problem, second order, undetermined coefficients.
51. Nonhomogeneous Cauchy-Euler.
Nagle, Saff, and Snider, p. 359.
18. Annihilate a function.
21. Form of a particular solution by annihilators.
Nagle, Saff, and Snider, p. 217.
10. Variation of parameters, long form.
21. Nonhomogeneous Cauchy-Euler.
22 Nonhomogeneous Bessel equation of order one half.
24. Variation of parameters, with Wronskian.
27. Nonhomogeneous solutions with definite integrals. Numerical integration.
Nagle, Saff, and Snider, p. 363.
3. Variation of parameters, third order.
Week8.mw
Nagle, Saff, and Snider, p. 214.
3. Conversion of third order initial value problem to system.
5. Conversion of system to higher order equations.
22. Conversion of system to higher order equations.
29. Two tank mixing problem.
Nagle, Saff, and Snider, p. 245.
Nagle, Saff, and Snider, p. 253.
7. Damped harmonic motion.
Nagle, Saff, and Snider, p. 259.
3. Forced vibrations and resonance.
10. Variation of parameters, long form.
21. Nonhomogeneous Cauchy-Euler.
22. Nonhomogeneous Bessel equation of order one half.
24. Variation of parameters, with Wronskian.
27. Nonhomogeneous solutions with definite integrals. Numerical integration.
Nagle, Saff, and Snider, p. 341.
3. Variation of parameters, third order.
Week9.mw
Nagle, Saff, and Snider, p. 266.
6. From systems to higher order equations, undetermined coefficients.
Nagle, Saff, and Snider, p. 300.
5. Frequency response curve for LRC series circuit.
Nagle, Saff, and Snider, p. 311.
1. Runge-Kutta for higher order equations.
Nagle, Saff, and Snider, p. 274.
2. Verify a solution pair in a system.
3. Critical point set for a system.
7. Integral curves for an autonomous system, separable.
9. Integral curves for an autonomous system, exact.
13. Phase plane diagram, phaseportrait.
15. Phase plane diagram, phaseportrait.
Week10.mw
Nagle, Saff and Snider, p. 531.
11. System of scalar differential equations to matrix differential equation.
Nagle, Saff and Snider, p. 536.
Nagle, Saff, and Snider, p. 545.
6. a) Matrix product.
13. Matrix inverse.
15. d) Complete solution to a system with multiple solutions.
16. Singular matrix. No solutions, many solutions.
19. Inverse of a matrix with expression entries.
25. Determinant of a square matrix.
29. Forming the identity matrix. Characteristic equation.
30. Gauss Jordan reduction for inverses.
34. Derivative of a matrix.
38. Verifying that a matrix solves a differential equation.
39. Integrating a matrix.
Nagle, Saff, and Snider, p. 554.
1. System to matrix, genmatrix.
8. Higher order equation to matrix equation, companion matrix.
12. Matrix to system.
18. Linear dependence of vector valued functions.
22. Fundamental solution sets.
23. Superposition.
Week11.mw
Nagle, Saff, and Snider, p. 565.
8. Eigenvalues and eigenvectors.
10. Eigenvalues and eigenvectors, complex.
17. Trajectories of solutions.
23. Fundamental matrix.
24. Fundamental matrix and verification.
29. Fundamental matrix, floating point decimals.
30. Fundamental matrix, matrix exponential.
33. Initial value problem with matrices.
35. Generalized eigenector solution.
42. Cauchy-Euler first order system.
43. Cauchy-Euler system.
47. Approximate solutions.
49. Stability.
Nagle, Saff, and Snider, p. 573.
1. General solution, complex eigenvalues.
7. Fundamental matrix, complex eigenvalues.
9. Fundamental matrix, complex eigenvalues.
13. a) Initial value problem, complex eigenvalues.
17. Cauchy-Euler with complex eigenvalues. Additionally, evalc.
21. RLC network.
Week12.mw
11. Gauss-Jordan solution of systems of linear equations.
Nagle, Saff, and Snider, p. 579.
8. Nonhomogeneous matrix equation, undetermined coefficients.
13. Nonhomogeneous matrix equation, undetermined coefficients.
13.(bis) Nonhomogeneous matrix equation, variation of parameters.
21. a) Nonhomogeneous initial value problem, &* ".
35. Two tank mixing problem.
Nagle, Saff, and Snider, p. 590.
24. Matrix exponential solution to initial value problem.
Week13.mw
Nagle, Saff, and Snider, p. 363.
7. Definition of Laplace transform.
12. Definition of Laplace transform. Piecewise,convert( ,Heaviside).
23. Piecewise, discont, plot.
Nagle, Saff, and Snider, p. 369.
9. Multiplication by t, multiplication by exp(c*t).
12. sin(3*x)*cos(3*x), Combine( ,trig).
29. Transfer function, alias.
31. Translation in t.
Nagle, Saff, and Snider, p. 379.
3. Inverse Laplace transform, shifting.
11. Partial fractions.
19. Partial fractions.
24. Inverse Laplace transform from partial fractions.
33. Inverse Laplace, derivative by s.
Week14.mw
Nagle, Saff, and Snider, p. 387.
7. Initial value problem by Laplace transform.
25. Initial value problem by Laplace transform.
29. General solution via Laplace transform.
37. Initial value problem via Laplace transform, non-constant coefficients.
Nagle, Saff, and Snider, p. 409.
5. Inverse Laplace transform, convolution.
13. Laplace transform of a convolution.
23. Transfer function, impulse response.
Nagle, Saff, and Snider, p. 417.
3. Dirac delta.
11. Laplace transform of Dirac delta.
21. Initial value problem with impulse, plot.
31. Stability.
Nagle, Saff, and Snider, p. 420.
10. Simultaneous differential equations and Laplace transforms.
Week15.mw
Nagle, Saff, and Snider, p. 750.
7. Classification of a critical point for stability.
11. Classification of a critical point for stability.
15. Classification of a critical point for stability.
17. Classification of a critical point for stability.
Nagle, Saff, and Snider, p. 762.
1. Almost linear point at origin, stability.
11. Almost linear point, stability.
15. Almost linear point, stability.
Week16.mw
Nagle, Saff, and Snider, p. 440.
6. Radius and interval of convergence of power series.
13. Product of power series.
16. Quotients of series.
20. Derivatives of power series.
34. Taylor series.
47. Series solution to Duffing's equation using dsolve.
Nagle, Saff, and Snider, p. 452.
11. Differential equation, power series solution.
25. Differential equation, power series solution, general term.
Nagle, Saff, and Snider, p. 458.
17. Differential equation, series solution, centered at Pi.