Consider the problem: Find $f(x)$ if $f’(x)=4x$ and $f(3)=12$ I have always done this, and taught it, as a two-step problem: First, find the general anti-derivative, $f(x)=2x^2+C$, and then plug in the given value, $12=2(3)^2+C$, to solve for $C$. I recently saw a student do it in one step...

How to prevent students from using modified calculators to cheat on exams? We had a (now-deleted) answer to this question that was at +28 with the author requesting that it be un-accepted so he could delete it. On the other hand, the comments explaining how it was bad had been upvoted to the fif...