... changewith constant rate of change, 712–714difference between left- and right-handsums and, 718–722explanation of, 712with nonconstant rate of change, 715–718overview of, 711–712Newton, ... integralsexplanation of, 903infinite interval of integration and, 903–907method of comparison and, 912–914methods to approach, 908–912unbounded and discontinuous integrands and, 907–908use of, 903Increasing ... trianglesarea of, 663–664explanation of, 657Law of Cosines and Law of Sines and, 658Obtuse angles, 662–663Odd functions, 65Open interval, 18, 270Operator notation, 209Optimizationanalysis of extrema...