We used TI-Nspire CX CAS at my university but it was banned in the first half of the calculus 1 course. It would really make no sense to allow you to bring one

We used TI-Nspire CX CAS at my university but it was banned in the first half of the calculus 1 course. It would really make no sense to allow you to bring one to an exam where many questions are one liners, or close to it (eg. "find the derivative of f(x)=7x^5+10"). IIRC, they also banned it in a calc 2 exam. Almost all other courses allowed them and they exams where designed for it (eg. 8 big problems instead of 2).