Differential Equations Notes

I want to take this course when my Coursera load gets a little lighter.

http://ocw.mit.edu/courses/mathematics/18-03sc-differential-equations-fall-2011/

Unit I

Conventions

An ordinary differential equation has one independent and one dependent variable.

Basic DE's

y' = ay is the most important equation. The solution is y(t) = Ce^at.

NOT DONE - do the problem sets