I am the GSI for section 108 (MWF 11-12P, 87 Evans) and 122 (MWF 12-1P, 179 Dwinelle).
Contact For any general (math or logistic) question about the course, please first check course website, then post at piazza, and finnaly if not answered, email me (see bellow). Piazza is better than email for math problems since it supports LaTeX (you won't enjoy typesetting a matrix in email).
For problems specific to our discussion section, you are encouraged to come at office hours or email me to schedule a time if you can't make it.
Please start your email subject line with [Math54].
Homeworks and Quizzes Tuesday's homework is due on next Monday's section. Thursday's homework is due on next Wednesday's section. No late homework will be accepted. Every Friday's section will have a quiz. Two quizzes with the lowest grades will be droped when computing the final grade. No make-up quizzes, as well as exams.
ODE and PDE Review: I am not going to write my own review document because I found the handouts given here LINK exceptionally useful and clear.
On the right is a presentation of trajectory, which is made possible by Mathematica and Wolfram CDF player. You can download a (extremly large) CDF player and then use IE, Firefox or Safari to interact (Chrome and Edge are not supported).
Arrows show the direction of the eigenvalues: outside going means positive and inside going means negative. One little spot represents the starting point and the other two are used to controll the e-vectors. All of them are movable by mouse. Click little plus sign near the controller you can see the value and make it animated. The CDF file is available above. Actually if we allow complex eigenvalues and vectors, things will be even fancier.