Barrow, Isaac, 1630-1677, Child, J. M. (James Mark), tr · Chicago, London : The Open court publishing company · leaf 122
med by arithmetical and geometricalmeans. Parabolifamis. Curves of hyperbolic and ellipticform. Differentiation of a fractional power^ products andquotients. We will now proceed along the path upon which westarted. I. Let the straight lines AB, VD be parallel to one another ;and let DB cut them in… … Fig. 94. and let the straight line BS touch the curve. Required todraw the tangent at B to the curve FBF. I02 BARROWS GEOMETRICAL LECTURES Let the numbers N, M (as explained in Lect. VII, § 12)be the exponents of the proportionals PF, PE; take DT,such that N : M = DS: DT, and join TB; then TB…
Geometry
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