During the last academic year I have been teaching Intermediate Micreconomics (Varian’s book), the part on profit maximization. During the lessons I gave, I helped myself with a summary. You find it below.

profit max part

(the focus was on the program established by the main teacher of the course, so it might differ to some extent from what you could be required to know by your teacher)

WARNING:

While teaching, I spotted a number of typos and similar errors. This is a summary that I used while teaching, and I have given it to students only on the last lesson. Do not quote or cite this summary. Do not even brainlessly read it.

I suggest first to attend the lessons, then to study the book and finally, if you need, you can use it only for a last minute revision, only in this way you can easily spot the errors.

Good luck