from math import from tkinter import def II return I1 int X1 I2 I1 X2

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from math import *
from tkinter import *
def II(x):
return I1 + int((x - X1)*(I2 - I1)/(X2 - X1))
def JJ(y):
return J2 + int((y - Y1)*(J1 - J2)/(Y2 - Y1))
def F(x):
if x == 0:
f = 1
else:
f = sin(x)/x
return f
X1 = -5 * pi
X2 = 5 * pi
Y1 = -1.2
Y2 = 1.2
I1 = 0
J1 = 0
I2 = 500
J2 = 500
n = 25
h = (X2 - X1)/n
root = Tk()
root.title(' F(x) = sin(x)/x, -5*pi<=x<=5*pi')
canv = Canvas(root, width = I2, height = J2, bg = 'lightblue')
canv.create_line(II(0), JJ(Y1), II(0), JJ(Y2), width = 2)
canv.create_line(II(X1), JJ(0), II(X2), JJ(0), width = 2)
points = []
x = X1
for i in range(n):
y = F(x)
P = (II(x), JJ(y))
points.append(P)
x = x + h
canv.create_line(points, width = 1, fill = 'green', smooth = 1)
for i in range(5):
canv.create_text(20, 210 - i*40, text = str(int(100*(Y2-Y1))/1000 + int(i * (Y2-Y1))/1000))
canv.create_line(II(int(Y2-Y1)/10), JJ(0), II(0), JJ(int(Y2-Y1)/10), width = 2)
for i in range(5):
canv.create_text(20, 290 + i*40, text = '-' + str(int(100*(Y2-Y1))/1000 + int(i * (Y2-Y1))/1000))
for i in range(5):
canv.create_text(290 + i * 40, 20, text = str(int(100*(X2-X1))/1000 + int(i * (X2-X1))/1000))
for i in range(5):
canv.create_text(210 - i * 40, 20, text = '-' + str(int(100*(X2-X1))/1000 + int(i * (X2-X1))/1000))
canv.pack()
root.mainloop()