The #subplot () function divides the canvas into areas and draws the chart on the specified area of the canvas
x = np.linspace(0, 10, 100)
# 将画布分为2行2列，将图画到画布的1区域
plt.subplot(2, 2, 1) #subplot(行, 列, 要放置的区域)
plt.xlim(-5, 20) # 修改x轴的坐标值范围
plt.ylim(-5, 20) # 修改y轴的坐标值范围
sin_y = np.sin(x)
plt.plot(x, sin_y)
plt.subplot(2, 2, 4)
cos_y = np.cos(x)
plt.plot(x, cos_y)
plt.show()
