Elements of analytical geometry and the differential and integral calculus (1856)
Robinson, Horatio N. (Horatio Nelson), 1806-1867 · Cincinnati : J. Ernst · leaf 206
cording to the nature of the curve and the position of theordinate. A line drawn from the point where the tangent meets thecurve perpendicular to the ordinate, will divide the ordinate intotwo parts ; the part lying under the tangent is called the sub-tangent, and the part under the normal is…
Geometry, Analytic · Calculus
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