I was thinking of mathematics more advanced than calculus, but it provides a good example. The IMO problems are designed to be done without it, but if I was pro

I was thinking of mathematics more advanced than calculus, but it provides a good example. The IMO problems are designed to be done without it, but if I was programming a computer to solve IMO style inequality problems I would certainly want it to have the "Lagrange multiplier" method in its toolbox.