import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl
import math
x1=np.linspace(-1,0,100)
y1=-2*x1
x2=np.linspace(0,0.5,100)
y2=-pow(math.e,-abs(x2))+1
x3=np.linspace(0.5,1,100)
y3=np.log10(pow(2,abs(x3)))
x=np.append(x1,x2)
y=np.append(y1,y2)
x=np.append(x,x3)
y=np.append(y,y3)
plt.plot(x,y)
plt.show()