A general geometry and calculus : including book I. of the general geometry, treating of loci in a plane; and an elementary course in the differential and integral calculus (1881)
Olney, Edward, 1827-1887 · New York : Sheldon and Co. · leaf 274
Fig. 16. whose equation is y^ 2px ; whence dy =^—. Still con- … FiG. 17. sidering dx as constant, i. e. DD = DD = DD= DD^, etc., it is evident that the dys, which arerepresented by PE, PE, PE, etc., are not constant.Now the difference between any two successive values ofdy, as between PE and PE, is a successive differ-ential, i. e. a differential of a…
Geometry, Analytic · Calculus
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