integration in 1D is pretty easy, its just the accumulated and signed area under the curve of a given function between 2 limits in a definite integral, and which happens to be the antiderivative for an indefinite integral.I had no trouble with linear algebra, but I can't integrate for the life of me. I had no problem with math until I came to that part.
for positive functions, you can understand it as simply the accumulated area under the curve, and this visual definition is actually very useful for computing real world accumulations given rate data, that do not actually have functions.
