Of course, Lu Zhou did not blame Professor Liu.
Professor Liu probably knew that his class was pretty useless for me and he doesn't want to waste my time. Does he probably mean that I don't have to attend?
But what if I don't get full marks…
Lu Zhou felt that the probability was low.
Since Lu Zhou was out of the game, the class became more enthusiastic. Luo Rundong, the second genius of the class quickly calculated the results and raised his hand to solve the problem.
[…]
[… is the exact differential equation.]
[The general solution is: lny/x+xy/(xy)=C]
Professor Liu gave a concise comment and smiled before saying, "Not bad."
The class bell rang.
Professor Liu was punctual and he finished his last words as soon as the bell rang. He then dismissal class.
The students in the classroom packed up their stuff and rushed toward the cafeteria.
