使用Python中的scimath计算自然对数
要使用scimath计算自然对数,请在Python Numpy中使用np.emath.log()方法。该方法返回x值的对数。如果x是标量,则out也是标量,否则会返回一个数组。第一个参数x是要计算其对数的值。
步骤
首先,导入所需的库−
import numpy as np
使用array()方法创建numpy数组−
arr = np.array([np.inf, -np.inf, np.exp(1), -np.exp(1)])
显示数组−
print("Our Array...\n",arr)
检查维度−
print("\nDimensions of our Array...\n",arr.ndim)
获取数据类型−
print("\nDatatype of our Array object...\n",arr.dtype)
获取形状−
print("\nShape of our Array object...\n",arr.shape)
要使用scimath计算自然对数,请在Python Numpy中使用np.emath.log()方法−
print("\nResult (log)...\n",np.emath.log(arr))
示例
import numpy as np # Creating a numpy array using the array() method arr = np.array([np.inf, -np.inf, np.exp(1), -np.exp(1)]) # Display the array print("Our Array...\n",arr) # Check the Dimensions print("\nDimensions of our Array...\n",arr.ndim) # Get the Datatype print("\nDatatype of our Array object...\n",arr.dtype) # Get the Shape print("\nShape of our Array object...\n",arr.shape) # To compute the natural logarithm with scimath, use the np.emath.log() method in Python Numpy. print("\nResult (log)...\n",np.emath.log(arr))
输出
Our Array... [ inf -inf 2.71828183 -2.71828183] Dimensions of our Array... 1 Datatype of our Array object... float64 Shape of our Array object... (4,) Result (log)... [inf+0.j inf+3.14159265j 1.+0.j 1.+3.14159265j]
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