import numpy as np
import matplotlib.pyplot as plt

x= np.linspace(0,10,1000)
y= np.sin(x)
z= np.cos(x**2)

plt.figure(figsize=(8,4))
plt.plot(x,y,label="sin(x)",color="red",linewidth=2)
plt.plot(x,z,"b--",label="cos(x^2)")
plt.xlabel("Time(s)")
plt.ylabel("Volt")
plt.title("PyPlot First Example")
plt.ylim(-1.2,1.2)
plt.legend()
plt.show()