Or the math covered in finite math classes which is a mix of combinatorics, stats, probability and linear algebra. I remember doing my time in the math tutorial room during my grad school days and helping the kids from the business calc classes who were learning math they weren't going to use from books written by people who didn't understand the domain that they were trying to teach math for. Seriously, what business use is there for f(x) = x^1.3 or the indefinite integral thereof?
When I tutored in business school--mostly related to math-related things (which itself says something about the level of math knowledge among those who weren't engineering undergrads)--pretty much the only calculus that came into play was finding maxima and minima of curves in economics which was both simple differentials and mostly pretty academic anyway. A little later I did some more complex optimization problems but that was done by software (LINDO at the time) anyway.
