#參數(shù)方程繪制器

import math, turtle

a = 0

b = 0

x = 0

y = 0

################################################################

#方程表達(dá)式

def f(a):

? ? x = 2*math.cos(a) #here

? ? return x

def g(a):

? ? y = math.sin(a) #here

? ? return y

#參數(shù)定義域? ?

left = 0

right = 2*math.pi

#畫面縮放

z = 100

#值差

l = 0.05

################################################################

turtle.speed(speed = 0)? ?

turtle.goto(0,0)

turtle.pendown()

for i in range(4):

? ? turtle.fd(500)

? ? turtle.goto(0,0)

? ? turtle.left(90)

turtle.penup()

turtle.goto(z,0)

turtle.pendown()

turtle.goto(z,z)

turtle.goto(0,z)

turtle.penup()

a = left

x = z*f(a)

y = z*g(a)

turtle.goto(x,y)

turtle.pendown()

turtle.left(135)

while a <= right+l:? ??

? ? x = z*f(a)? ??

? ? y = z*g(a)? ??

? ? turtle.goto(x,y)

? ? a = a + l

print('finish')

#極坐標(biāo)系方程繪制器

import math, turtle

a = 0

b = 0

x = 0

y = 0

################################################################

#方程表達(dá)式

def f(a):

? ? x = 100*math.sin(2*a) #here

? ? return x

#定義域

left = 0

right = math.pi*2

#畫面縮放

z = 100

#值差

l = 0.01

################################################################

turtle.speed(speed = 0)? ?

turtle.goto(0,0)

turtle.pendown()

for i in range(4):

? ? turtle.fd(500)

? ? turtle.goto(0,0)

? ? turtle.left(90)

turtle.penup()

turtle.goto(z,0)

turtle.pendown()

turtle.goto(z,z)

turtle.goto(0,z)

turtle.penup()

a = left

x = z*f(a)

turtle.goto(x,y)

turtle.pendown()

turtle.left(135)

while a <= right+l:? ??

? ? x = math.cos(a)*f(a)? ??

? ? y = math.sin(a)*f(a)? ??

? ? turtle.goto(x,y)

? ? a = a + l

print('finish')

注：這僅為輔助工具，必須按自己的需求修改程序才能正常使用。