В чем ошибка написанного кода?

from math import e, cos, sin, log
from matplotlib import pyplot as plt
 
def f_x(x):
    y = (e ** cos(x) + log(sin ** 2 (0,8 * x) + 1)) * cos(x)
    return y
def y_x(x):
    y = -log(((cos(x) + sin(x)) ** 2) + 1,7) + 2
    return y
 
a = -10
b = 10
n = 100
h = (b-a)/(n-1)
 
x_list = [a + h * i for i in range(n)]
f_list = [f_x(x) for float(x) in x_list]
y_list = [y_x(x) for float(x) in x_list]
 
line_f = plt.plot(x_list, f_list, label = 'f_x')
line_y = plt.plot(y_list, f_list, label = 'y_x')
 
plt.setp(line_f, color = "blue", linewight = 2)
plt.setp(line_y, color = "red", linewight = 2)
 
plt.gca().spines["bottom"].set_position("zero")
plt.gca().spines["left"].set_position("zero")
plt.gca().spines["top"].set_visible(False)
plt.gca().spines["right"].set_visible(False)
 
plt.legend()
plt.title("Графики")
 
plt.show()

from math import e, cos, sin, log
from matplotlib import pyplot as plt
 
def f_x(x):
    y = (e ** cos(x) + log((sin(0.8 * x)) ** 2 + 1)) * cos(x)
    return y
def y_x(x):
    y = -log(((cos(x) + sin(x)) ** 2) + 1.7) + 2
    return y
 
a = -10
b = 10
n = 100
h = (b-a)/(n-1)
 
x_list = [a + h * i for i in range(n)]
f_list = [f_x(float(x)) for x in x_list]
y_list = [y_x(float(x)) for x in x_list]
 
line_f = plt.plot(x_list, f_list, label = 'f_x')
line_y = plt.plot(y_list, f_list, label = 'y_x')
 
plt.setp(line_f, color = "blue")
plt.setp(line_y, color = "red")
 
plt.gca().spines["bottom"].set_position("zero")
plt.gca().spines["left"].set_position("zero")
plt.gca().spines["top"].set_visible(False)
plt.gca().spines["right"].set_visible(False)
 
plt.legend()
plt.title("Графики")
 
plt.show()

[f_x(float(x)) for x in x_list]