Journal of the Franklin Institute; devoted to science and the mechanic arts (1826)
Franklin Institute (Philadelphia, Pa.) · Oxford, Eng. [etc.] Pergamon Press [etc.] · leaf 158
not be the required plane. Commencing at p, lay off in like manner divisions equal to those ofa b, and repeat the construction with respect to each of the points», p, q, &c, until one is found from which the divisions being laid offall the points lie nearer to I than the corresponding points n,… … To avoid confusion in the diagram, a parallel to Imhns been drawn,and the scale is constructed on it. r is the point of contact, and(a\ 0)—b\ 6 is the tangent plane. Problem V. Fig. 4.—To ascend a given hill with a given slope. Let (a, 0)—(A, 6) be the E hill, and —the given slope. The secant…
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