Hello Everybody,

I would suggest the problems below as practice for the midterm.
You don't have to do all the problems. I would suggest doing at least
3 problems for each type of differential equation. 
Problems involving integrating factors and separable equations should 
be standard at this point. Try not looking at your notes!

Remember also that the solutions are at the back of the book.
I've also found some nice problems in an on-line book
http://math.msu.edu/~gnagy/teaching/ode.pdf
There are solutions at the end of it, too. 



***** Integrating factors

Problems 1.2.1 to 1.2.6 on page 19 of
http://math.msu.edu/~gnagy/teaching/ode.pdf

And also the easier Problems 1.1.1 to 1.1.6 on page 12 of
http://math.msu.edu/~gnagy/teaching/ode.pdf

***** Separable equations

Section 2.1, problems 13, 14, 16, 17

Section 2.1, problems 24, 25 26

Don't waste time looking for max/min or any 
other additional question they might ask you
about the solution.

***** Homogeneous equations:

Problems 1.3.5, 1.3.6, 1.3.7 on page 28 of
http://math.msu.edu/~gnagy/teaching/ode.pdf

AND/OR

Section 2.1, problems 31 to 35

***** Exact equations

Problems 1.4.1, 1.4.2, 1.4.3 on page 37 of
http://math.msu.edu/~gnagy/teaching/ode.pdf

AND/OR

Section 2.6, problems 1ab to 9ab. 




Good luck,
Maks.