from sympy import diff
from math import sin,cos
 
def returnfunc(x):
	return 3*cos(3*x)+1/(x+2)-sin(x)
 
def returndiff(differ, x):
	differ = str(differ)
	differ = differ.replace('x', str(x))
	result = eval(differ)
	return result
 
func = '3*cos(3*x)+1/(x+2)-sin(x)'
differ = diff(func)
delta = 1
epsilon = 0.001
x0 = 2
count = 0
 
while delta>epsilon:
	x = x0 - returnfunc(x0) / returndiff(differ, x0)
	delta = abs(x-x0)
	print(format(x,".3f"))
	x0 = x
	count += 1
	if count > 30:
		break
print ('Количество итераций', count)

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