<p>assuming I got A's in chem 6A, math 20A, math 20B, and math 20C?</p>
<p>20E is harder then 20A/B/C</p>
<p>However if you learned vector somewhere else it may not be that difficult. The hardest part about it is the awful book they use. If you are fine learning most of it on the internet then it might not be a problem for you (khan academy comes to mind).</p>
<p>Enjoy integrating 2 page problems where the answer is 0! :D!</p>