diff --git a/homework_02_numpy_matplotlib/2.2.text b/homework_02_numpy_matplotlib/2.2.text
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index 0000000000000000000000000000000000000000..0efdb860cd7e1c0b5f40f5fb6cc918e4febb1280
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+++ b/homework_02_numpy_matplotlib/2.2.text
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+import numpy as np
+a=np.diag([1,2,3,4], k=1)
+print(a)
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