Some basic integral and differential support would be helpful for day-to-day use.
For example, at the start of the book The Art of Doing Science and Engineering, the author gives us a "back-of-the-envelope" calculation for estimating the percentage of scientists who ever lived and are still alive today. It uses a simple integral to achieve that.
This would also require support for defining custom functions like here: E.g., the number of scientists at any time, t, can be modelled as y(t) = a × exp(b × t).
Happy to provide more details.