how to set axis range 28xlim 2c ylim 29 in matplotlib

1fig, ax = plt.subplots(figsize=(12, 6))
2
3x = np.arange(0, 10, 0.1)
4y = np.sin(x)
5z = np.cos(x)
6
7ax.plot(y, color='blue', label='Sine wave')
8ax.plot(z, color='black', label='Cosine wave')
9
10plt.xlim([25, 50])
11plt.show()
12