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2019-2020学年度高中数学第2章参数方程四渐开线与摆线课件PPT精选_图文

1. () () . . 2. . . 01 02 03 1 [] 2 3 (1)__xy___rr_sc_io_ns______cs_oi_ns_______(_________)__ (2)__xy___rr__1___cs_oin_s_______(________)__ [] 1 x ( ) A B C D C. C 2xyscions sin cos ( ) ( ) A1 B C2 D2 1 . B. B 3xy33scions 3sin 3cos ( ) ________ 2 ________ r3 3 2 x32 y3. 3 323 [ 1] 2 AB 232 AB [] r1xyscions sin cos ( ) 2xyscions 22sin 22cos 22 21 A21. 32xyscions 3232sin 3232cos 3232 321 B321. |AB| 23221122 21. r M 1xy44scions sin cos A 2xy4411csoins x2 B AB 2xy44scions sin cos xy42 A(24) xy4411csoins x2 sin 12cos 23 cos 23y4 2 3 y42 3 B (2,42 3)(2,42 3) |AB| 22242 342 2 1232 224. [ 2] 2 ( M O ()) [] B x A M ABM. OA AM 2 B (22) OB(22) MB(2sin 2cos ) BM(2sin 2cos ) OMOBBM (22sin 22cos ) (2(sin )2(1cos )) M (xy)OM(xy) xy221csoins . 1 2 r 2(2,0) (2,0)(2r,0)() 2r2r1. xy111csoins ( ) 300 250 8-10 A A ... ... f z [ 3] a r P [] O OFP x P (x y)AOB |BF|l r AB OP OF FP OB BF FP (rcos rsin ) rcos2 rsin2 (acos asin ) ((ra)cos rsin (ra)sin rcos ) (xy) P xracos rsin yrasin rcos () (1)M(xy) (2) (3) (4)OM 3.ABCD1AEFGH... AEEFFGGH... BCDAAEFGH AE 1 142 EF 2 14 FG 3 1432GH 4 14 2. AEFGH 5. [] (1,0) [] r(1cos )0cos 1. 2k(kZ) xr(2ksin 2k)1 r2k1.rr0. k0kZkN*. x2k1sin y2k11cos (kN*) [] (1)cos 10 (2)(1,0)10 (3) xrsin yr1cos () r [] 1( ) A B C D C 2 x3cos y3sin () 2322( ) A.21 B. 2 C. 10 D. 321 f z d x y 3 x33sin y33cos () 2 x321 y3 |AB| 321322322 10. C 3________ ________________ (cos sin )x2y21 [0) 2r 2r(r)


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