Elements of analytical geometry and the differential and integral calculus (1856)
Robinson, Horatio N. (Horatio Nelson), 1806-1867 · Cincinnati : J. Ernst · leaf 207
198 DIFFERENTIAL CALCULUS. Fig. 3. In every known curve some relation must be given be-tween AF and IM, (fig. 3,)the co-ordinates of the curve.If we represent AP by x,and FMhj y, then y=f(^x).The similar triangles SPM,MQM\ give us the followingproportion: SF : PM :: MQ : QM. Now as we diminish PP…
Geometry, Analytic · Calculus
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