<jupyter_start><jupyter_text>Chapter 5 ディープラーニングの理論* 5.1 数学の基礎  リスト 5.3 NupPyで自然対数を計算する<jupyter_code>import numpy as np

print(np.log(np.e))
print(np.log(np.exp(2)))
print(np.log(np.exp(12)))<jupyter_output>1.0
2.0
12.0
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