& |! G7 W! P8 W0 K. ^" y W32.tan曲线- ]4 G8 e2 H: J0 ?
笛卡儿坐标系* `0 X5 s$ f8 k8 A1 @! R9 E: z
8 Y- @! G6 h! f6 {x = t*8.5 -4.25 `- {1 E4 Y: F% ~! by = tan(x*20) + F( G9 k* {* y7 a, P1 I2 u4 |' } 2 _$ Y/ }( e b$ b2 K# _ , `3 G: b3 c/ t) C! m) {* N33.双曲余弦 9 Y" g* v. P7 K2 u. Z* D: i: }- L" c! Z
x = 6*t-3 ) h! @1 T }8 }( |- j' _y = (exp(x)+exp(0-x))/2 + G! \: G# q x' f . ?+ Q/ q1 L ?( _ 5 h, _0 L# [/ m; C2 b8 a Y+ {34.双曲正弦 5 ^! X" q# N9 c. g f- o4 z" U! H5 H! d$ c+ H* `/ [: R+ x
x = 6*t-3 0 C& h$ ~4 f' h! ]y = (exp(x)-exp(0-x))/23 c& n$ N% \8 M* M
. R. ?( `+ a& `, P8 v7 u 6 J2 L$ f% J& b35.双曲正切 , e9 B6 S6 c* o0 h7 M! N' @: E3 c# s; l* J4 e; B- R2 x t9 ?
x = 6*t-3 # j, A4 @0 ]; h/ o5 Yy = (exp(x)-exp(0-x))/(exp(x)+exp(0-x))- Q9 ]* f* b- i+ O5 [
2 U K- f$ b W6 I
5 R/ O' @# I2 V# S+ K X! O
36.一峰三驻点曲线 : H9 Y* e& t N7 l* O( H, Z5 T) o) Z5 O7 X. R% J$ M' N x* U
x = 3*t-1.5 ' k3 e3 Q) y4 w* p" U! ~5 Ly=(x^2-1)^3+1$ K" i2 [/ Z$ z* e! m
4 R4 F! P/ i6 s
) i; [" w; L' W: _2 O Q4 {& O" a2 c37.八字曲线5 r: W6 c& @* F3 [8 i: ^! z ^
( B. J% F- q; Ix = 2 * cos ( t *(2*180)) ; n5 H$ Z" B. `& N) @y = 2 * sin ( t *(5*360)) 8 ?2 l) A; a3 v* {z = 0/ H. Z- a3 l# y9 o5 _
6 N& h" R3 R0 R( G! k" d$ l# W1 P2 Y: Q* v0 I% f" B6 j2 P& l
38.螺旋曲线 : U" a, E7 S+ ?- j& p: n3 C6 L T5 i# n$ e& F3 I+ }! g1 qr=t*(10*180)+1' a0 b8 X& p$ Q4 f& C
theta=10+t*(20*180). K k. E' C7 @" F
z=t ; E% e; T- s4 c " v( i z/ B3 q: `' [: h7 d0 t* Q0 Y, d6 H$ W* G2 D( h% W3 o5 w
39.圆- y2 D6 [6 B' a2 P1 b
+ ?( V% N0 f7 E7 a) z% _ Z8 v1 O1 |% dx = cos ( t *(5*180)), @6 W- _3 m$ C4 B% X
y = sin ( t *(5*180))) r% Y, v. O2 L3 u9 B7 _
z = 01 e. J& Z' c' Y) B9 t
( h' B; ~- z- x; P
6 ^- H6 s# G" d4 H* J+ Q40.封闭球形环绕曲线 7 U r) ^/ {) E/ T6 _4 b . B/ |5 k% ^* J( }8 ?" |$ arho=20 j& |) V* l5 P9 |; w
theta=360*t ; v! m6 X" A7 b1 Hphi=t*360*10 6 Q7 m/ Q7 g8 I6 {: \
# B' d- E7 V1 y! I9 A- U
0 O9 y# e8 e; `( K V2 g2 G
41.柱坐标螺旋曲线3 G. `' M \5 _% C
+ W# T& Q# x: D) i
x = 100*t * cos ( t *(5*180)) % m' F% ]' z2 K" `4 O8 P' Fy = 100*t * sin ( t *(5*180)) ' ?" G h9 n/ Q$ g: ~) @z = 01 z9 M% s2 X) y5 ^" D7 T' b6 A
- Y- `) @. u- D% s / X. N, }, x6 C. l; W( h4 i X5 Z$ Y42.蛇形曲线" H* n; q3 |! J5 V
% r! U7 z L9 x! _5 ?; M
x = 2 * cos ( (t+1) *(2*180)) : Y. V* j, D$ a! z; ty = 2 * sin ( t *(5*360)); u( P' M# r G( [& n1 {
z = t*(t+1) / Z3 `) V! p2 p, } $ R7 L" ^6 U$ R7 l6 s. d3 Y& J8 w; U: U* {3 m6 M0 Q' Z
43.8字形曲线 ! @( P2 g. _$ R+ M柱坐标4 g i ^. s, N1 p* s8 ]# L
2 T( [9 q% F+ }, Mtheta = t*360 " a8 t/ L( M) U% \r=10+(8*sin(theta))^2 2 }4 b# f1 U$ ]& u6 j- l3 D- k* }( L
. \9 p* X, ^$ `" \* t2 W, Q' N
44.椭圆曲线& P( m7 l% `6 I" s* D' [
笛卡尔坐标系 # k+ \- V; t! i& u% F0 ^0 u. E7 A# @/ A+ J% W) A" I* h6 Q$ M! O
a = 104 r( w, f7 k# q1 p+ S! ~1 h
b = 20; ?2 O- e' C/ v. Z2 s
theta = t*3600 V9 d4 G, n' J+ Q3 ~6 r! H4 G
x = a*cos(theta)" L% T7 c2 p. q/ o0 d5 v. K% S
y = b*sin(theta) 1 Q7 @9 Z3 y( k( j3 N, k( u7 I1 ^# {$ b$ l
5 ? w( p& ]* h! i6 `
45.梅花曲线 & Y1 g, s# Q: U5 Y6 {9 }柱坐标 ! g$ d5 ~4 f; d; O% }+ l) G ! X1 [& B3 m$ P. T& b: ~ [% Wtheta = t*360 % F2 _. W1 n9 Y4 L" Z, q: kr=10+(3*sin(theta*2.5))^26 D% T& l. g9 Y/ ]9 z