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.sin(arr1)
print("np.sin(arr1) =", arr2)  # [ 0.84147098  0.90929743  0.14112001 -0.7568025 ]

arr2 = np.cos(arr1)
print("np.cos(arr1) =", arr2)  # [ 0.54030231 -0.41614684 -0.9899925  -0.65364362]

arr2 = np.tan(arr1)
print("np.tan(arr1) =", arr2)  # [ 1.55740772 -2.18503986 -0.14254654  1.15782128]

arr2 = np.exp(arr1)
print("np.exp(arr1) =", arr2)  # [ 2.71828183  7.3890561  20.08553692 54.59815003]

arr2 = np.log(arr1)
print("np.log(arr1) =", arr2)  # [0.  0.69314718 1.09861229 1.38629436]

arr2 = np.sinh(arr1)
print("np.sinh(arr1) =", arr2)  # [ 1.17520119  3.62686041 10.01787493 27.2899172 ]

arr2 = np.cosh(arr1)
print("np.cosh(arr1) =", arr2)  # [ 1.54308063  3.76219569 10.067662   27.30823284]

arr2 = np.tanh(arr1)
print("np.tanh(arr1) =", arr2)  # [0.76159416 0.96402758 0.99505475 0.9993293 ]

arr2 = np.sqrt(arr1)  # arr2 = arr1 ** 0.5 と等価
print("np.sqrt(arr1) =", arr2)  # [1.  1.41421356 1.73205081 2. ]

arr2 = -arr1
print("-arr1 =", arr2)  # [-1 -2 -3 -4]

arr2 = np.abs(-arr1)  # 要素ごとの絶対値
print("np.abs(-arr1) =", arr2)  # [1 2 3 4]