数学图形(1.42)拱形曲线

line_箕舌线

vertices = 1000

x = from -10 to 10
a = 1
y = 8*pow(a, 3)/(x*x + 4*a*a)

由箕舌线组成的面

vertices = D1:360 D2:100

u = from -10 to 10 D1
v = from 0.001 to 5 D2

x = u
y = 8*pow(v, 3)/(x*x + 4*v*v)

line_概率曲线

vertices = 3600
x = from (-5) to (5)
y = pow(E, -x*x)

由概率线组成的面

vertices = D1:360 D2:100
u = from (-5) to (5) D1
v = from 0 to 10 D2

x = u
y = pow(E, -pow(abs(x), v))

 

Frequency

#http://www-gap.dcs.st-and.ac.uk/~history/Curves/Frequency.html

vertices = 2000

x = from -5 to 5

y = sqrt(2*PI*exp(-x*x/2))