Maybe we're working from different definitions of "calculus". To me, equations and relations between variables are not calculus, just algebra. Only when you st

Maybe we're working from different definitions of "calculus". To me, equations and relations between variables are not calculus, just algebra. Only when you start studying the infinitesimals of change does it start to count as calculus. I don't have any derivatives or integrals in my programs, and very few do.