If you are good at math, take with him because there are only 6 questions for 1st and 2nd exams. However, he doesn't cover all the materials, which are going to be on the exam. Instead, he focuses on explaining formula. Generally, his class is difficult to understand.

This was THE WORST math class I have ever taken. I heard that Cooper was the teacher, he wrote the text book. Grigoryan is incomprehensible, he writes in font about this size on the chalkboard. His midterms did NOT cover most of the material he covered in review sessions or in class. Do. Not. Take. This. Class.... please.

Very boring professor, never shows any sign of interest. His tests are way harder than he says they will be. Avoid him if possible!

Grigoriyan is the most disinterested lecturer I have come across. He seems bored by life, and by the really simple math he has been assigned to teach. I feel bad for the guy, but all he does is derive formulas on the chalkboard. So I don't go to lecture. My grade does not suffer as a result.