It's not "different strokes," it's a change of perspective causing massive confusion all 'round. Computer science isn't a knock-off approximation of mathematics, it's a subfield of mathematics. Programming, which is what the post is talking about, is a third thing. The derivative is the inverse of the indefinite interval (and has the same arity), but the function he refers to computes a definite integral which is not the same thing. Etc.
Confusion about this stuff is a sign that you didn't really understand it the first time. Believe me, I've been (am still) there...
Confusion about this stuff is a sign that you didn't really understand it the first time. Believe me, I've been (am still) there...