<p>modestmelody, i think that difference stems from the fact that students in 17 know more about integrals than students in 10. If you didn’t spend the time in high school learning the nasty integrals, you won’t be able to use them on the cool things in 17. That’s why I say 10 is for people who don’t like math. It’s stuff you already know, so it’s an easy A.</p>