Analytic geometry, for technical schools and colleges (1897)
Lambert, Preston Albert, 1862-1925 · New York, Macmillan · leaf 92
= 2BCA = 2 GAC. ^ C G -^ ^^^ ^^ ^ \ D\ Ae ^ m \ n E F Art. 41.—Plottinct of Polar Equations Example. —Plot r = 10 cos 0. e = () ^TT ItT fir TT fTT §77 | TT 2,r r = l() nV2 0 -5V2 -10 -5VL> 0 - SV^ 10 POL A R COORBINA TES 77 If tlie iiuinl.or oipoints located Iroiu ^ = 0to ^ = 2 TT is… … Example. —Plot r = aO. e = -4: -3 -2 -1 0 r = — 4a — 3 a — 2 a — a 0 12 3 4a 2 a 3 a 4 a The curve is calledthe spiral of Archimedes.In rectangular coordi-nates the equation ofthis spiral is transcen-dental.
Geometry, Analytic
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