I figured out how integration gives the area under a graph
I learned how differentiation works a few months ago. Then I learned integration too. I was taught that integration is the inverse of differentiation. Hmm... okay. Then I was taught that the area under the curve of a graph drawn by a function f(x) can be obtained by integrating f(x). But I could not understand how that works. So I searched the web but it didn't helped. I found many online content about the topic but they just explained the theory, not the concept behind the theory. I tried to understand this my self. By the way, I'm just a student trying to share my knowledge. So please let me know, if I'm wrong . Suppose there's a function called g(x). Following image shows 2 graphs, y = g(x) curve on the left. Curve in the right side is a representation of gradient value for each point of y = g(x) against its respective x - coordinate. To plot the second graph, we need to calculate the gradient of each point of the first graph. If the function is linear, we could j...