Python – math.atanh()函数
数学模块包含许多用于数学运算的函数。 math.atanh()函数将数字的双曲反正切作为值返回。在这个函数中传递的值应该在 -0.99 到 0.99 之间。
Syntax: math.atanh(x)
Parameter:This method accepts only single parameters.
- x :This parameter is the value to be passed to atanh()
Returns:This function returns the hyperbolic arctangent of a number as a value.
下面的例子说明了上述函数的使用:
示例 1:
# Python code to implement
# the atanh()function
# importing "math"
# for mathematical operations
import math
# Return the hyperbolic arctangent of numbers
print (math.asinh(0.17))
print (math.asinh(0.56))
print (math.asinh(0.245))
print (math.asinh(-0.3445))
输出:
0.1691916359351954
0.5342240739536623
0.24261291139707475
-0.33802589861247084
示例 2:
# Python code to implement
# the atanh()function
import math
import numpy as np
import matplotlib.pyplot as plt
in_array = np.linspace(-np.pi / 3.5, np.pi / 3.5, 10)
print("Input_Array : \n", in_array)
out_array = []
for i in range(len(in_array)):
out_array.append(math.atanh(in_array[i]))
i += 1
print("\nOutput_Array : \n", out_array)
plt.plot(in_array, out_array, "go:")
plt.title("math.atanh()")
plt.xlabel("X")
plt.ylabel("Y")
plt.show()
输出:
Input_Array :
[-0.8975979 -0.6981317 -0.4986655 -0.2991993 -0.0997331 0.0997331
0.2991993 0.4986655 0.6981317 0.8975979]
Output_Array :
[-1.459718446245292, -0.8636465496349238, -0.547528391492765, -0.30863994644251713, -0.10006575914805733, 0.10006575914805743, 0.30863994644251724, 0.5475283914927653, 0.863646549634924, 1.459718446245292]