Elements of analytical geometry and the differential and integral calculus (1856)
Robinson, Horatio N. (Horatio Nelson), 1806-1867 · Cincinnati : J. Ernst · leaf 40
f any linepassing through point H may beexpressed by y=ax-\-h. (I) * This condition of the perpendicularity of the twolines may be more satisfactory to some when they readthe more direct demonstration. Let AB be one line, and AT) another line at rightangles to it. Join BD, and from A draw AX…
Geometry, Analytic · Calculus
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