- #1

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## Main Question or Discussion Point

To find the area under a curve within some range we can either add up infinite infinitesimal tiny rectangles (using limits) (method 1) or do the opposite process of differentiation (method 2).

How did Leibniz/Newton figure out/prove that the opposite process of differentiation (method 2) would give the same answer as adding up rectangles (method 1)?

How did Leibniz/Newton figure out/prove that the opposite process of differentiation (method 2) would give the same answer as adding up rectangles (method 1)?