<p>i doubt transfers have to take it, especially if you’ve taken the equivalent to 21a and want to take 21b. you should look into it though.
harder? if you learned the 21b material in your calc 1 class and calc 2 = 21c, then it should be apparent that 21b will be easy for you. if you’re talking about relative difficulty in terms of speed, teaching, curves, exams etc. then we can’t really tell you since we don’t know where you went to CC and even if we did we probably didn’t go there, lol.</p>