Elements of analytical geometry and the differential and integral calculus (1856)
Robinson, Horatio N. (Horatio Nelson), 1806-1867 · Cincinnati : J. Ernst · leaf 232
vex towards the axis of X. If the last term of equation (1) be negative, that is, ify=-h—{x-^y,the reverse position will correspond with the curve, as in the nextfigure. At the point M whose co-ordinates arex=-a, y=-hy there is a change of conxexityto concavity towards the axis of X, Such points…
Geometry, Analytic · Calculus
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