[Math the World] claims that your calculus teacher taught you integration wrong. That’s assuming, of course, you learned integration at all, and if you haven’t forgotten it. The premise is ...

Solving difference equations. Differential and integral calculus for functions of several variables, including maximum-minimum problems, partial derivatives. Method of least squares. First-order ...

This can solve differential equations and evaluate definite integrals. Applying differential calculus Optimisation is used to find the greatest/least value(s) a function can take. This can involve ...