I used to use Mathematica a lot and it was never an issue that the keyboard doesn’t have an integral sign or a lambda. You just type :int or :lambda and it disp

I used to use Mathematica a lot and it was never an issue that the keyboard doesn’t have an integral sign or a lambda. You just type :int or :lambda and it displays as the proper character. When working with mathematical modeling it’s honestly just so refreshing and every other symbolic math solution in other languages feels decades behind. But alas Mathematica is proprietary and expensive enough that it’s always a management decision if you want to use it, so I never use it any more.