{\displaystyle \int _{a}^{b}\!f(x)\,dx=F(b)-F(a).} The principles of integration were formulated independently by Isaac Newton and Gottfried Leibniz in the late 17th century, who thought of the integral as an infinite sum of rectangles of infinitesimal width.
amendment - a statement that is added to or revises or improves a proposal or document (a bill or constitution etc.) statement - a message that is stated or declared; a communication (oral or written) setting forth particulars or facts etc; according to his statement he was in London on that day.
amendment noun. C2 [U or C] a âchange or âchanges made to the words of a âtext: He âinsisted that the âbook did not need amendment. I've made a few âlast-minute amendments to the âarticle. Presidential âpower was âreduced by a âconstitutional amendment in 1991.