> How come some people can answer this so easily even though > I took college math and cannot? Why is the skill gap so great? The maths you learned was not pr

> How come some people can answer this so easily even though > I took college math and cannot? Why is the skill gap so great? The maths you learned was not proof based, just knowing calq / linalg / diffeq's etc. is knowing how to use some tools required for STEM it's not really proper maths. > How do people learn advanced math? They do what you did but go a step further. Most STEM undergraduates learn calculus, linear algebra, differential equations, maybe some laplace and fourier transforms. The next step is to go right back to the beginning and learn to construct the lemmas and properties of numbers using logic and proofs. Most courses don't do this step. It's not a big deal unless you want to work in mathematics academia figuring out proofs to things. > So I need to learn skills that will make me employable. Mathematics is not what you should focus on. No one is going to start paying you to write proofs.