Analytic geometry and principles of algebra (1913)
Ziwet, Alexander, 1853-1928, Hopkins, Louis Allen, joint author, Hedrick, E. R. (Earle Raymond), 1876-1943 · New York, The Macmillan Company · leaf 206
the distance of the ordi-nates, and let 2/1,2/2, 2/3 be any threeconsecutive ordinates. Then the doubly shaded portion of the requiredarea, between 2/1 and 2/3, will be (if Ax is sufficiently small) very nearlyequal to the area under the parabola that passes through Pi, Pa, P3 andhas its axis… … Fig. 7: 194 PLAXi: ANALYTIC• CrllOMlTIlV IX, § 200
Geometry, Analytic
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