>The code to create the tree should not complex, so yes, AI could be used, but most competent coders should be able to create a basic version and test it in an afternoon.

I generally tend to find the idea of 'competent' coders misleading. For the most part, I have been developing or writing code in a certain language for while, then it turns out that I am competent coder? Because, yeah, I've been using C or Python for a while and can easily solve a lot of "complex" problems in C but with all due respect, I am obviously not a competent coder. It's like a situation where you frequent a certain part of town that you're very familiar with it and the people living there but then at the same time you don't live there - lol.

Anyways, for this problem I would parse this statement but definitely not into a tree. I'd assign the integrals to objects. I would then parse or go through the statement again executing the operands.

Well...