Same. I studied derivatives and integrals twice. First time in HS, and it was just a bunch of random rules I had to learn by heart to be able to do these calcul

Same. I studied derivatives and integrals twice. First time in HS, and it was just a bunch of random rules I had to learn by heart to be able to do these calculations that were required to pass the tests. Second time was during the first year at university. Here the professor explained that derivatives are needed to calculate the speed with which something changes. Since we were studying economics, interest rates and growth rates made great intuitive examples. Or that integrals permit us to calculate the area under a graph, thus making it possible to calculate for ex the total expected value of something over time. When I saw the utility out of this mathematical tools, studying how to apply them became of great interest!