<p>I was always good at math and it came fairly easily for me. I was surprised when I first took calculus in college (this was in the 70’s). I just didn’t get it! I ended up dropping it at the last minute because I was flunking. So next semester, I tried again and was panicky when I still didn’t get it! Then, about a week in, something just clicked- I still remember being surprised that I hadn’t seen it before. I ended up with A’s from then on. Calculus is very different from other courses you have taken before. You have to approach it with a very open mind and be willing to learn it without being able to justify WHY you are learning it as it will not be readily apparent at first. You will start applying it a little later and then it will all make sense. Just memorize and proceed even if you don’t understand why you are learning it- at least at first. I have to say, I don’t remember ever using it directly in my engineering career although much of what I did was derived using it- it was good to understand the basis for my designs!</p>