プログラム一覧に戻る

import numpy as np


arr1 = np.array([1, 2, 3, 4])  # リストからndarrayを生成し、arr1という名前を付ける
print("arr1 =", arr1)
arr2 = np.arange(5, 1, -1)  # [5, 4, 3, 2]というndarrayを生成し、arr2という名前を付ける
print("arr2 =", arr2)

arr3 = arr1 + arr2
print("arr1 + arr2 =", arr3)  # [6 6 6 6]

arr3 = arr1 - arr2
print("arr1 - arr2 =", arr3)  # [-4 -2  0  2]

arr3 = arr1 * arr2
print("arr1 * arr2 =", arr3)  # [5 8 9 8]

arr3 = arr1 / arr2
print("arr1 / arr2 =", arr3)  # [0.2 0.5 1.  2. ]

arr3 = arr1 ** arr2
print("arr1 ** arr2 =", arr3)  # [ 1 16 27 16]

arr3 = arr1 @ arr2  # 2つのndarrayの内積
print("arr1 @ arr2 =", arr3)  # 30