Functions and Reverse Functions

from math import exp, log
from matplotlib import pyplot as plt

x = list()
LIMIT = 2
counter = LIMIT / 100
while counter <= LIMIT:
    x.append(counter)
    counter += LIMIT / 100

# Building the functions
y1 = list()
y2 = list()
y = list()
for element in x:
    y1.append(exp(element))
    y2.append(log(element))
    y.append(element)
print(y1)
print(y)
print(y2)
# Building the diagram
plt.plot(x, y1, label="y1 = e^x")
plt.plot(x, y, label="y = x")
plt.plot(x, y2, label="y2 = lnx")
plt.legend()
plt.show()