只是积分吧，积分的概念一千前数学家就有

来源: 于 2016-06-03 16:32:43 [旧帖] [给我悄悄话] 本文已被阅读：次

According to Leibniz's notebooks, a critical breakthrough occurred on November 11, 1675, when he employed integral calculus for the first time to find the area under the graph of a function y = ƒ(x).