{\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 -- Any alteration made (or proposed to be made) to a bill or clause thereof, by adding, deleting, substituting, or omitting. Committee amendment -- an alteration made (or proposed to be made) to a bill that is offered by a legislative committee.