Mathematics for engineering students, Analytical geometry and calculus (1907)
Keller, S. S. (Samuel Smith), 1867-1923, Knox, W. F., [from old catalog] joint author · New York : D. Van Nostrand company · leaf 16
tance to the point is measuredalong the radius vector forward, it shall be positive;when measured on the radius vector produced back-ward through the pole it shall be negative. For example, the point (3, -j would be located thus (Fig. 4) : Draw an indefinite line OB (representing the radius vector)… … If the point had been ( — 3, — j the 3 units would have been measured back toward B to P. If the angle had been the radius vector would have taken the positive 3direction OB. The usual notation for co-ordinates in the polar systemis (r, 0) or (/>, 0). EXERCISE II. 1. Locate the points: K)-M)<…
Geometry, Analytic · Calculus
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
