26. 三尖瓣线
a=10
x = a*(2*cos(t*360)+cos(2*t*360))
y = a*(2*sin(t*360)-sin(2*t*360))
27.概率曲线!
方程:
笛卡儿坐标
x = t*10-5
y = exp(0-x^2)
28.箕舌线
笛卡儿坐标系
a = 1
x = -5 + t*10
y = 8*a^3/(x^2+4*a^2)
29.阿基米德螺线
柱坐标
a=100
theta = t*400
r = a*theta
30.对数螺线
柱坐标
theta = t*360*2.2
a = 0.005
r = exp(a*theta)
图30
31.蔓叶线
笛卡儿坐标系
a=10
y=t*100-50
solve
x^3 = y^2*(2*a-x)
for x
32.tan曲线
笛卡儿坐标系
x = t*8.5 -4.25
y = tan(x*20)
33.双曲余弦
x = 6*t-3
y = (exp(x)+exp(0-x))/2
图33
34.双曲正弦
x = 6*t-3
y = (exp(x)-exp(0-x))/2
图34
35.双曲正切
x = 6*t-3
y = (exp(x)-exp(0-x))/(exp(x)+exp(0-x))
36.一峰三驻点曲线
x = 3*t-1.5
y=(x^2-1)^3+1
37.八字曲线
x = 2 * cos ( t *(2*180))
y = 2 * sin ( t *(5*360))
z = 0
38.螺旋曲线
r=t*(10*180)+1
theta=10+t*(20*180)
z=t
39.圆
x = cos ( t *(5*180))
y = sin ( t *(5*180))
z = 0
40.封闭球形环绕曲线
rho=2
theta=360*t
phi=t*360*10
41.柱坐标螺旋曲线
x = 100*t * cos ( t *(5*180))
y = 100*t * sin ( t *(5*180))
z = 0
42.蛇形曲线
x = 2 * cos ( (t+1) *(2*180))
y = 2 * sin ( t *(5*360))
z = t*(t+1)
43.8字形曲线
柱坐标
theta = t*360
r=10+(8*sin(theta))^2
44.椭圆曲线
笛卡尔坐标系
a = 10
b = 20
theta = t*360
x = a*cos(theta)
y = b*sin(theta)
45.梅花曲线
柱坐标
theta = t*360
r=10+(3*sin(theta*2.5))^2
46.另一个花曲线
theta = t*360
r=10-(3*sin(theta*3))^2
z=4*sin(theta*3)^2
47.改一下就成为空间感更强的花曲线了;)
theta = t*360
r=10-(3*sin(theta*3))^2
z=(r*sin(theta*3))^2