2.1 Summary table
 2.2 Lecture 1, Thursday Sept. 3, 2015
 2.3 Lecture 2, Tuesday Sept. 8, 2015, Closed loop and Simulink review
 2.4 Lecture 3, Thursday Sept. 10, 2015, Steady state and transient responses
 2.5 Lecture 4, Tuesday Sept. 15, 2015, Performance specs, steady state error
 2.6 Lecture 5, Thursday Sept. 17, 2015, MIMO matrix of transfer functions
 2.7 Lecture 6, Tuesday Sept. 22, 2015, Armature controlled DC motor with MIMO
 2.8 Lecture 7, Wednesday Sept. 23, 2015, Start of signal graph and Mason rule
 2.9 Lecture 8, Thursday Sept. 24, 2015, Mason, benefits of feedback, non-linear systems
 2.10 Lecture 9, Tuesday Sept. 29, 2015, First exam
 2.11 Lecture 10, Thursday Oct. 1, 2015, No lecture
 2.12 Lecture 11, Tuesday Oct. 6, 2015, Sensitivity of transfer function
 2.13 Lecture 12. Thursday Oct 8, 2015, control to reject noise and disturbances
 2.14 Lecture 13. Tuesday Oct 13, 2015, Noise rejection, second order systems
 2.15 Lecture 14. Thursday Oct 15, 2015, More second order, Overshoot and resonance
 2.16 Lecture 15. Tuesday Oct 20, 2015, Feedback using user specified time specs
 2.17 Lecture 16. Thursday Oct 22, 2015, Routh stability
 2.18 Lecture 17, Tuesday Oct 27, 2015, Starting on root locus
 2.19 Lecture 18, Thursday Oct 29, 2015, More root locus
 2.20 Lecture 19, Nov. 3, 2015. No lecture
 2.21 Lecture 20, Nov. 5, 2015. Roots Locus completed
 2.22 Lecture 21, Nov 10 2015, Extension Root Locus
 2.23 Lecture 22, Nov 12 2015, second exam
 2.24 Lecture 23, Nov 17 2015, Started Nyquist
 2.25 Lecture 24, Nov 19 2015, More Nyquist
 2.26 Lecture 25, Tuesday Nov 24 2015, gain and phase margins
 2.27 Lecture 26, Thursday Nov. 26 2015, thanks giving, no class
 2.28 Lecture 27, Tuesday December 1 2015, Start Bode frequency analysis
 2.29 Lecture 28, Thursday December 4 2015, More Bode analysis
 2.30 Lecture 29, Dec 8 2015, Bode gain and phase, effects of delay
 2.31 Lecture 30, Dec 10 2015, Final exam
 2.32 Cheat sheet